Detect intent

There are basic samples that show how to detect intent in the quickstart. This guide provides additional samples for advanced scenarios.

Detect intent with audio input

The following samples show how to detect intent with audio input.

Java

To authenticate to Dialogflow, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 


import com.google.api.gax.rpc.ApiException;
import com.google.cloud.dialogflow.cx.v3.AudioEncoding;
import com.google.cloud.dialogflow.cx.v3.AudioInput;
import com.google.cloud.dialogflow.cx.v3.DetectIntentRequest;
import com.google.cloud.dialogflow.cx.v3.DetectIntentResponse;
import com.google.cloud.dialogflow.cx.v3.InputAudioConfig;
import com.google.cloud.dialogflow.cx.v3.QueryInput;
import com.google.cloud.dialogflow.cx.v3.QueryResult;
import com.google.cloud.dialogflow.cx.v3.SessionName;
import com.google.cloud.dialogflow.cx.v3.SessionsClient;
import com.google.cloud.dialogflow.cx.v3.SessionsSettings;
import com.google.protobuf.ByteString;
import java.io.FileInputStream;
import java.io.IOException;

public class DetectIntentAudioInput {

  // DialogFlow API Detect Intent sample with Audio input.
  public static void main(String[] args) throws IOException, ApiException {
    /** TODO (developer): replace these values with your own values */
    String projectId = "my-project-id";
    String locationId = "global";
    String agentId = "my-agent-id";
    String audioFileName = "resources/book_a_room.wav";
    int sampleRateHertz = 16000;
    /*
     * A session ID is a string of at most 36 bytes in size.
     * Your system is responsible for generating unique session IDs.
     * They can be random numbers, hashed end-user identifiers,
     * or any other values that are convenient for you to generate.
     */
    String sessionId = "my-UUID";
    String languageCode = "en";

    detectIntent(
        projectId, locationId, agentId, audioFileName, sampleRateHertz, sessionId, languageCode);
  }

  public static void detectIntent(
      String projectId,
      String locationId,
      String agentId,
      String audioFileName,
      int sampleRateHertz,
      String sessionId,
      String languageCode)
      throws IOException, ApiException {

    SessionsSettings.Builder sessionsSettingsBuilder = SessionsSettings.newBuilder();
    if (locationId.equals("global")) {
      sessionsSettingsBuilder.setEndpoint("dialogflow.googleapis.com:443");
    } else {
      sessionsSettingsBuilder.setEndpoint(locationId + "-dialogflow.googleapis.com:443");
    }
    SessionsSettings sessionsSettings = sessionsSettingsBuilder.build();

    // Instantiates a client by setting the session name.
    // Format:`projects/<ProjectID>/locations/<LocationID>/agents/<AgentID>/sessions/<SessionID>`

    // Note: close() needs to be called on the SessionsClient object to clean up resources
    // such as threads. In the example below, try-with-resources is used,
    // which automatically calls close().
    try (SessionsClient sessionsClient = SessionsClient.create(sessionsSettings)) {
      SessionName session =
          SessionName.ofProjectLocationAgentSessionName(projectId, locationId, agentId, sessionId);

      // TODO : Uncomment if you want to print session path
      // System.out.println("Session Path: " + session.toString());
      InputAudioConfig inputAudioConfig =
          InputAudioConfig.newBuilder()
              .setAudioEncoding(AudioEncoding.AUDIO_ENCODING_LINEAR_16)
              .setSampleRateHertz(sampleRateHertz)
              .build();

      try (FileInputStream audioStream = new FileInputStream(audioFileName)) {
        // Subsequent requests must **only** contain the audio data.
        // Following messages: audio chunks. We just read the file in fixed-size chunks. In reality
        // you would split the user input by time.
        byte[] buffer = new byte[4096];
        int bytes = audioStream.read(buffer);
        AudioInput audioInput =
            AudioInput.newBuilder()
                .setAudio(ByteString.copyFrom(buffer, 0, bytes))
                .setConfig(inputAudioConfig)
                .build();
        QueryInput queryInput =
            QueryInput.newBuilder()
                .setAudio(audioInput)
                .setLanguageCode("en-US") // languageCode = "en-US"
                .build();

        DetectIntentRequest request =
            DetectIntentRequest.newBuilder()
                .setSession(session.toString())
                .setQueryInput(queryInput)
                .build();

        // Performs the detect intent request.
        DetectIntentResponse response = sessionsClient.detectIntent(request);

        // Display the query result.
        QueryResult queryResult = response.getQueryResult();

        System.out.println("====================");
        System.out.format(
            "Detected Intent: %s (confidence: %f)\n",
            queryResult.getTranscript(), queryResult.getIntentDetectionConfidence());
      }
    }
  }
}

Node.js

To authenticate to Dialogflow, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

/**
 * TODO(developer): Uncomment these variables before running the sample.
 */
// const projectId = 'my-project';
// const location = 'global';
// const agentId = 'my-agent';
// const audioFileName = '/path/to/audio.raw';
// const encoding = 'AUDIO_ENCODING_LINEAR_16';
// const sampleRateHertz = 16000;
// const languageCode = 'en'

// Imports the Google Cloud Some API library
const {SessionsClient} = require('@google-cloud/dialogflow-cx');
/**
 * Example for regional endpoint:
 *   const location = 'us-central1'
 *   const client = new SessionsClient({apiEndpoint: 'us-central1-dialogflow.googleapis.com'})
 */
const client = new SessionsClient();

const fs = require('fs');
const util = require('util');

async function detectIntentAudio() {
  const sessionId = Math.random().toString(36).substring(7);
  const sessionPath = client.projectLocationAgentSessionPath(
    projectId,
    location,
    agentId,
    sessionId
  );
  console.info(sessionPath);

  // Read the content of the audio file and send it as part of the request.
  const readFile = util.promisify(fs.readFile);
  const inputAudio = await readFile(audioFileName);

  const request = {
    session: sessionPath,
    queryInput: {
      audio: {
        config: {
          audioEncoding: encoding,
          sampleRateHertz: sampleRateHertz,
        },
        audio: inputAudio,
      },
      languageCode,
    },
  };
  const [response] = await client.detectIntent(request);
  console.log(`User Query: ${response.queryResult.transcript}`);
  for (const message of response.queryResult.responseMessages) {
    if (message.text) {
      console.log(`Agent Response: ${message.text.text}`);
    }
  }
  if (response.queryResult.match.intent) {
    console.log(
      `Matched Intent: ${response.queryResult.match.intent.displayName}`
    );
  }
  console.log(
    `Current Page: ${response.queryResult.currentPage.displayName}`
  );
}

detectIntentAudio();

Python

To authenticate to Dialogflow, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

def run_sample():
    # TODO(developer): Replace these values when running the function
    project_id = "YOUR-PROJECT-ID"
    # For more information about regionalization see https://cloud.google.com/dialogflow/cx/docs/how/region
    location_id = "YOUR-LOCATION-ID"
    # For more info on agents see https://cloud.google.com/dialogflow/cx/docs/concept/agent
    agent_id = "YOUR-AGENT-ID"
    agent = f"projects/{project_id}/locations/{location_id}/agents/{agent_id}"
    # For more information on sessions see https://cloud.google.com/dialogflow/cx/docs/concept/session
    session_id = str(uuid.uuid4())
    audio_file_path = "YOUR-AUDIO-FILE-PATH"
    # For more supported languages see https://cloud.google.com/dialogflow/es/docs/reference/language
    language_code = "en-us"

    detect_intent_audio(agent, session_id, audio_file_path, language_code)


def detect_intent_audio(agent, session_id, audio_file_path, language_code):
    """Returns the result of detect intent with an audio file as input.

    Using the same `session_id` between requests allows continuation
    of the conversation."""
    session_path = f"{agent}/sessions/{session_id}"
    print(f"Session path: {session_path}\n")
    client_options = None
    agent_components = AgentsClient.parse_agent_path(agent)
    location_id = agent_components["location"]
    if location_id != "global":
        api_endpoint = f"{location_id}-dialogflow.googleapis.com:443"
        print(f"API Endpoint: {api_endpoint}\n")
        client_options = {"api_endpoint": api_endpoint}
    session_client = SessionsClient(client_options=client_options)

    input_audio_config = audio_config.InputAudioConfig(
        audio_encoding=audio_config.AudioEncoding.AUDIO_ENCODING_LINEAR_16,
        sample_rate_hertz=24000,
    )

    with open(audio_file_path, "rb") as audio_file:
        input_audio = audio_file.read()

    audio_input = session.AudioInput(config=input_audio_config, audio=input_audio)
    query_input = session.QueryInput(audio=audio_input, language_code=language_code)
    request = session.DetectIntentRequest(session=session_path, query_input=query_input)
    response = session_client.detect_intent(request=request)

    print("=" * 20)
    print(f"Query text: {response.query_result.transcript}")
    response_messages = [
        " ".join(msg.text.text) for msg in response.query_result.response_messages
    ]
    print(f"Response text: {' '.join(response_messages)}\n")

Detect intent with event invocation

The following samples show how to detect intent with event invocation.

Java

To authenticate to Dialogflow, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 


import com.google.api.gax.rpc.ApiException;
import com.google.cloud.dialogflow.cx.v3.DetectIntentRequest;
import com.google.cloud.dialogflow.cx.v3.DetectIntentResponse;
import com.google.cloud.dialogflow.cx.v3.EventInput;
import com.google.cloud.dialogflow.cx.v3.QueryInput;
import com.google.cloud.dialogflow.cx.v3.QueryResult;
import com.google.cloud.dialogflow.cx.v3.SessionName;
import com.google.cloud.dialogflow.cx.v3.SessionsClient;
import com.google.cloud.dialogflow.cx.v3.SessionsSettings;
import java.io.IOException;

public class DetectIntentEventInput {

  // DialogFlow API Detect Intent sample with Event input.
  public static void main(String[] args) throws IOException, ApiException {
    String projectId = "my-project-id";
    String locationId = "global";
    String agentId = "my-agent-id";
    String sessionId = "my-UUID";
    String event = "my-event-id";
    String languageCode = "en";

    detectIntent(projectId, locationId, agentId, sessionId, event, languageCode);
  }

  public static void detectIntent(
      String projectId,
      String locationId,
      String agentId,
      String sessionId,
      String event,
      String languageCode)
      throws IOException, ApiException {

    SessionsSettings.Builder sessionsSettingsBuilder = SessionsSettings.newBuilder();
    if (locationId.equals("global")) {
      sessionsSettingsBuilder.setEndpoint("dialogflow.googleapis.com:443");
    } else {
      sessionsSettingsBuilder.setEndpoint(locationId + "-dialogflow.googleapis.com:443");
    }
    SessionsSettings sessionsSettings = sessionsSettingsBuilder.build();

    // Instantiates a client by setting the session name.
    // Format:`projects/<ProjectID>/locations/<LocationID>/agents/<AgentID>/sessions/<SessionID>`

    // Note: close() needs to be called on the SessionsClient object to clean up resources
    // such as threads. In the example below, try-with-resources is used,
    // which automatically calls close().
    try (SessionsClient sessionsClient = SessionsClient.create(sessionsSettings)) {
      SessionName session =
          SessionName.ofProjectLocationAgentSessionName(projectId, locationId, agentId, sessionId);

      // TODO : Uncomment if you want to print session path
      // System.out.println("Session Path: " + session.toString());

      EventInput.Builder eventInput = EventInput.newBuilder().setEvent(event);

      // Build the query with the EventInput and language code (en-US).
      QueryInput queryInput =
          QueryInput.newBuilder().setEvent(eventInput).setLanguageCode(languageCode).build();

      // Build the DetectIntentRequest with the SessionName and QueryInput.
      DetectIntentRequest request =
          DetectIntentRequest.newBuilder()
              .setSession(session.toString())
              .setQueryInput(queryInput)
              .build();

      // Performs the detect intent request.
      DetectIntentResponse response = sessionsClient.detectIntent(request);

      // Display the query result.
      QueryResult queryResult = response.getQueryResult();

      // TODO : Uncomment if you want to print queryResult
      System.out.println("====================");
      System.out.format("Triggering Event: %s \n", queryResult.getTriggerEvent());
    }
  }
}

Node.js

To authenticate to Dialogflow, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

/**
 * TODO(developer): Uncomment these variables before running the sample.
 */
/**
 *  Required. The name of the session this query is sent to.
 *  Format: `projects/<Project ID>/locations/<Location ID>/agents/<Agent
 *  ID>/sessions/<Session ID>` or `projects/<Project ID>/locations/<Location
 *  ID>/agents/<Agent ID>/environments/<Environment ID>/sessions/<Session ID>`.
 *  If `Environment ID` is not specified, we assume default 'draft'
 *  environment.
 *  It's up to the API caller to choose an appropriate `Session ID`. It can be
 *  a random number or some type of session identifiers (preferably hashed).
 *  The length of the `Session ID` must not exceed 36 characters.
 *  For more information, see the sessions
 *  guide (https://cloud.google.com/dialogflow/cx/docs/concept/session).
 *  Note: Always use agent versions for production traffic.
 *  See Versions and
 *  environments (https://cloud.google.com/dialogflow/cx/docs/concept/version).
 */

/**
 * Optional. The parameters of this query.
 */
// const queryParams = {}
/**
 *  Required. The input specification. See https://cloud.google.com/dialogflow/cx/docs/reference/rest/v3beta1/ConversationTurn#QueryInput for information about query inputs.
 */
// const event = 'name-of-event-to-trigger';

// Imports the Cx library
const {SessionsClient} = require('@google-cloud/dialogflow-cx');
/**
 * Example for regional endpoint:
 *   const location = 'us-central1'
 *   const client = new SessionsClient({apiEndpoint: 'us-central1-dialogflow.googleapis.com'})
 */
// Instantiates a client
const cxClient = new SessionsClient();

async function detectIntentWithEventInput() {
  const sessionId = Math.random().toString(36).substring(7);
  const sessionPath = cxClient.projectLocationAgentSessionPath(
    projectId,
    location,
    agentId,
    sessionId
  );

  // Construct detect intent request
  const request = {
    session: sessionPath,
    queryInput: {
      event: {
        event: event,
      },
      languageCode,
    },
  };

  // Send request and receive response
  const [response] = await cxClient.detectIntent(request);
  console.log(`Event Name: ${event}`);

  // Response message from the triggered event
  console.log('Agent Response: \n');
  console.log(response.queryResult.responseMessages[0].text.text[0]);
}

detectIntentWithEventInput();

Python

To authenticate to Dialogflow, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

import uuid

from google.cloud.dialogflowcx_v3.services.sessions import SessionsClient
from google.cloud.dialogflowcx_v3.types import session


def run_sample():
    # TODO(developer): Update these values when running the function
    # project_id = "YOUR-PROJECT-ID"
    # location = "YOUR-LOCATION-ID"
    # agent_id = "YOUR-AGENT-ID"
    # event = "YOUR-EVENT"
    # language_code = "YOUR-LANGUAGE-CODE"

    project_id = "dialogflow-cx-demo-1-348717"
    location = "global"
    agent_id = "8caa6b47-5dd7-4380-b86e-ea4301d565b0"
    event = "sys.no-match-default"
    language_code = "en-us"

    detect_intent_with_event_input(
        project_id,
        location,
        agent_id,
        event,
        language_code,
    )


def detect_intent_with_event_input(
    project_id,
    location,
    agent_id,
    event,
    language_code,
):
    """Detects intent using EventInput"""
    client_options = None
    if location != "global":
        api_endpoint = f"{location}-dialogflow.googleapis.com:443"
        print(f"API Endpoint: {api_endpoint}\n")
        client_options = {"api_endpoint": api_endpoint}
    session_client = SessionsClient(client_options=client_options)
    session_id = str(uuid.uuid4())
    session_path = session_client.session_path(
        project=project_id,
        location=location,
        agent=agent_id,
        session=session_id,
    )

    # Construct detect intent request:
    event = session.EventInput(event=event)
    query_input = session.QueryInput(event=event, language_code=language_code)
    request = session.DetectIntentRequest(
        session=session_path,
        query_input=query_input,
    )

    response = session_client.detect_intent(request=request)
    response_text = response.query_result.response_messages[0].text.text[0]
    print(f"Response: {response_text}")
    return response_text

Detect intent with caller-triggered intent match

The following samples show how to detect intent with a caller-triggered intent match.

Java

To authenticate to Dialogflow, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 


import com.google.api.gax.rpc.ApiException;
import com.google.cloud.dialogflow.cx.v3.DetectIntentRequest;
import com.google.cloud.dialogflow.cx.v3.DetectIntentResponse;
import com.google.cloud.dialogflow.cx.v3.IntentInput;
import com.google.cloud.dialogflow.cx.v3.QueryInput;
import com.google.cloud.dialogflow.cx.v3.QueryResult;
import com.google.cloud.dialogflow.cx.v3.SessionName;
import com.google.cloud.dialogflow.cx.v3.SessionsClient;
import com.google.cloud.dialogflow.cx.v3.SessionsSettings;
import java.io.IOException;

public class DetectIntentIntentInput {

  // DialogFlow API Detect Intent sample with Intent input.
  public static void main(String[] args) throws IOException, ApiException {
    String projectId = "my-project-id";
    String locationId = "global";
    String agentId = "my-agent-id";
    String sessionId = "my-UUID";
    String intent = "my-intent-id";
    String languageCode = "en";

    detectIntent(projectId, locationId, agentId, sessionId, intent, languageCode);
  }

  public static void detectIntent(
      String projectId,
      String locationId,
      String agentId,
      String sessionId,
      String intent,
      String languageCode)
      throws IOException, ApiException {

    SessionsSettings.Builder sessionsSettingsBuilder = SessionsSettings.newBuilder();
    if (locationId.equals("global")) {
      sessionsSettingsBuilder.setEndpoint("dialogflow.googleapis.com:443");
    } else {
      sessionsSettingsBuilder.setEndpoint(locationId + "-dialogflow.googleapis.com:443");
    }
    SessionsSettings sessionsSettings = sessionsSettingsBuilder.build();

    // Instantiates a client by setting the session name.
    // Format:`projects/<ProjectID>/locations/<LocationID>/agents/<AgentID>/sessions/<SessionID>`

    // Note: close() needs to be called on the SessionsClient object to clean up resources
    // such as threads. In the example below, try-with-resources is used,
    // which automatically calls close().
    try (SessionsClient sessionsClient = SessionsClient.create(sessionsSettings)) {
      SessionName session =
          SessionName.ofProjectLocationAgentSessionName(projectId, locationId, agentId, sessionId);

      // TODO : Uncomment if you want to print session path
      // System.out.println("Session Path: " + session.toString());

      IntentInput.Builder intentInput = IntentInput.newBuilder().setIntent(intent);

      // Build the query with the IntentInput and language code (en-US).
      QueryInput queryInput =
          QueryInput.newBuilder().setIntent(intentInput).setLanguageCode(languageCode).build();

      // Build the DetectIntentRequest with the SessionName and QueryInput.
      DetectIntentRequest request =
          DetectIntentRequest.newBuilder()
              .setSession(session.toString())
              .setQueryInput(queryInput)
              .build();

      // Performs the detect intent request.
      DetectIntentResponse response = sessionsClient.detectIntent(request);

      // Display the query result.
      QueryResult queryResult = response.getQueryResult();

      // TODO : Uncomment if you want to print queryResult
      System.out.println("====================");
      System.out.format(
          "Detected Intent: %s (confidence: %f)\n",
          queryResult.getIntent().getDisplayName(), queryResult.getIntentDetectionConfidence());
    }
  }
}

Node.js

To authenticate to Dialogflow, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

/**
 * TODO(developer): Uncomment these variables before running the sample.
 */

/**
 * const projectId = 'your-project-id';
 * const location = 'location';
 * const agentId = 'your-agent-id';
 * const languageCode = 'your-language-code';
 */

/**
 * The input specification. See https://cloud.google.com/dialogflow/cx/docs/reference/rest/v3beta1/ConversationTurn#QueryInput for information about query inputs.
 */
// const intentId = 'unique-identifier-of-the-intent-to-trigger';

// Imports the Cx library
const {
  SessionsClient,
  IntentsClient,
} = require('@google-cloud/dialogflow-cx');
/**
 * Example for regional endpoint:
 *   const location = 'us-central1'
 *   const client = new SessionsClient({apiEndpoint: 'us-central1-dialogflow.googleapis.com'})
 */
// Instantiates a Sessions client
const sessionsClient = new SessionsClient();

// Instantiates an Intents client
const intentsClient = new IntentsClient();

async function detectIntentWithIntentInput() {
  const sessionId = Math.random().toString(36).substring(7);

  // Creates session path
  const sessionPath = sessionsClient.projectLocationAgentSessionPath(
    projectId,
    location,
    agentId,
    sessionId
  );

  // Creates intent path. Format: projects/<Project ID>/locations/<Location ID>/agents/<Agent ID>/intents/<Intent ID>
  const intentPath = intentsClient.intentPath(
    projectId,
    location,
    agentId,
    intentId
  );

  // Construct detectIntent request
  const request = {
    session: sessionPath,
    queryInput: {
      intent: {
        intent: intentPath,
      },
      languageCode,
    },
  };

  // Send request and receive response
  const [response] = await sessionsClient.detectIntent(request);

  // Display the name of the detected intent
  console.log('Intent Name: \n');
  console.log(response.queryResult.intent.displayName);

  // Agent responds with fulfillment message of the detected intent
  console.log('Agent Response: \n');
  console.log(response.queryResult.responseMessages[0].text.text[0]);
}

detectIntentWithIntentInput();

Python

To authenticate to Dialogflow, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

import uuid

from google.cloud.dialogflowcx_v3.services.intents import IntentsClient
from google.cloud.dialogflowcx_v3.services.sessions import SessionsClient
from google.cloud.dialogflowcx_v3.types import session


def run_sample():
    # TODO(developer): Update these values when running the function
    project_id = "YOUR-PROJECT-ID"
    location = "YOUR-LOCATION-ID"
    agent_id = "YOUR-AGENT-ID"
    intent_id = "YOUR-INTENT-ID"
    language_code = "en-us"

    detect_intent_with_intent_input(
        project_id,
        location,
        agent_id,
        intent_id,
        language_code,
    )


def detect_intent_with_intent_input(
    project_id,
    location,
    agent_id,
    intent_id,
    language_code,
):
    """Returns the result of detect intent with sentiment analysis"""
    client_options = None
    if location != "global":
        api_endpoint = f"{location}-dialogflow.googleapis.com:443"
        print(f"API Endpoint: {api_endpoint}\n")
        client_options = {"api_endpoint": api_endpoint}
    session_client = SessionsClient(client_options=client_options)
    session_id = str(uuid.uuid4())
    intents_client = IntentsClient()

    session_path = session_client.session_path(
        project=project_id,
        location=location,
        agent=agent_id,
        session=session_id,
    )
    intent_path = intents_client.intent_path(
        project=project_id,
        location=location,
        agent=agent_id,
        intent=intent_id,
    )

    intent = session.IntentInput(intent=intent_path)
    query_input = session.QueryInput(intent=intent, language_code=language_code)
    request = session.DetectIntentRequest(
        session=session_path,
        query_input=query_input,
    )

    response = session_client.detect_intent(request=request)
    response_text = []
    for response_message in response.query_result.response_messages:
        response_text.append(response_message.text.text)
        print(response_message.text.text)
    return response_text

Detect intent with sentiment analysis enabled

The following samples show how to detect intent with sentiment analysis enabled.

Java

To authenticate to Dialogflow, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 


import com.google.api.gax.rpc.ApiException;
import com.google.cloud.dialogflow.cx.v3.DetectIntentRequest;
import com.google.cloud.dialogflow.cx.v3.DetectIntentResponse;
import com.google.cloud.dialogflow.cx.v3.QueryInput;
import com.google.cloud.dialogflow.cx.v3.QueryParameters;
import com.google.cloud.dialogflow.cx.v3.QueryResult;
import com.google.cloud.dialogflow.cx.v3.SessionName;
import com.google.cloud.dialogflow.cx.v3.SessionsClient;
import com.google.cloud.dialogflow.cx.v3.SessionsSettings;
import com.google.cloud.dialogflow.cx.v3.TextInput;
import com.google.common.collect.Maps;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

public class DetectIntentSentimentAnalysis {

  public static void main(String[] args) throws IOException, ApiException {
    String projectId = "my-project-id";
    String locationId = "global";
    String agentId = "my-agent-id";
    String sessionId = "my-UUID";
    List<String> texts = new ArrayList<>(List.of("my-list", "of-texts"));
    String languageCode = "en";

    detectIntent(projectId, locationId, agentId, sessionId, texts, languageCode);
  }

  // DialogFlow API Detect Intent sample with sentiment analysis.
  public static Map<String, QueryResult> detectIntent(
      String projectId,
      String locationId,
      String agentId,
      String sessionId,
      List<String> texts,
      String languageCode)
      throws IOException, ApiException {
    SessionsSettings.Builder sessionsSettingsBuilder = SessionsSettings.newBuilder();
    if (locationId.equals("global")) {
      sessionsSettingsBuilder.setEndpoint("dialogflow.googleapis.com:443");
    } else {
      sessionsSettingsBuilder.setEndpoint(locationId + "-dialogflow.googleapis.com:443");
    }
    SessionsSettings sessionsSettings = sessionsSettingsBuilder.build();

    Map<String, QueryResult> queryResults = Maps.newHashMap();

    // Instantiates a client by setting the session name.
    // Format:`projects/<ProjectID>/locations/<LocationID>/agents/<AgentID>/sessions/<SessionID>`

    // Note: close() needs to be called on the SessionsClient object to clean up resources
    // such as threads. In the example below, try-with-resources is used,
    // which automatically calls close().
    try (SessionsClient sessionsClient = SessionsClient.create(sessionsSettings)) {
      SessionName session =
          SessionName.ofProjectLocationAgentSessionName(projectId, locationId, agentId, sessionId);

      // TODO : Uncomment if you want to print session path
      // System.out.println("Session Path: " + session.toString());

      // Detect intents for each text input.
      for (String text : texts) {
        // Set the text (hello) for the query.
        TextInput.Builder textInput = TextInput.newBuilder().setText(text);

        // Build the query with the TextInput and language code (en-US).
        QueryInput queryInput =
            QueryInput.newBuilder().setText(textInput).setLanguageCode(languageCode).build();

        // Build the query parameters to analyze the sentiment of the query.
        QueryParameters queryParameters =
            QueryParameters.newBuilder().setAnalyzeQueryTextSentiment(true).build();

        // Build the DetectIntentRequest with the SessionName, QueryInput, and QueryParameters.
        DetectIntentRequest request =
            DetectIntentRequest.newBuilder()
                .setSession(session.toString())
                .setQueryInput(queryInput)
                .setQueryParams(queryParameters)
                .build();

        // Performs the detect intent request.
        DetectIntentResponse response = sessionsClient.detectIntent(request);

        // Display the query result.
        QueryResult queryResult = response.getQueryResult();

        // TODO : Uncomment if you want to print queryResult
        // System.out.println("====================");
        // SentimentAnalysisResult sentimentAnalysisResult =
        //     queryResult.getSentimentAnalysisResult();
        // Float score = sentimentAnalysisResult.getScore();

        queryResults.put(text, queryResult);
      }
    }
    return queryResults;
  }
}

Node.js

To authenticate to Dialogflow, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

/**
 * TODO(developer): Uncomment these variables before running the sample.
 */
/**
 *  Required. The name of the session this query is sent to.
 *  Format: `projects/<Project ID>/locations/<Location ID>/agents/<Agent
 *  ID>/sessions/<Session ID>` or `projects/<Project ID>/locations/<Location
 *  ID>/agents/<Agent ID>/environments/<Environment ID>/sessions/<Session ID>`.
 *  If `Environment ID` is not specified, we assume default 'draft'
 *  environment.
 *  It's up to the API caller to choose an appropriate `Session ID`. It can be
 *  a random number or some type of session identifiers (preferably hashed).
 *  The length of the `Session ID` must not exceed 36 characters.
 *  For more information, see the sessions
 *  guide (https://cloud.google.com/dialogflow/cx/docs/concept/session).
 *  Note: Always use agent versions for production traffic.
 *  See Versions and
 *  environments (https://cloud.google.com/dialogflow/cx/docs/concept/version).
 */

/**
 * Optional. The parameters of this query.
 */
// const queryParams = {}
/**
 *  Required. The input specification. See https://cloud.google.com/dialogflow/cx/docs/reference/rest/v3beta1/ConversationTurn#QueryInput for information about query inputs.
 */
// const text = 'text-of-your-query';

// Imports the Cx library
const {SessionsClient} = require('@google-cloud/dialogflow-cx');
/**
 * Example for regional endpoint:
 *   const location = 'us-central1'
 *   const client = new SessionsClient({apiEndpoint: 'us-central1-dialogflow.googleapis.com'})
 */
// Instantiates a client
const cxClient = new SessionsClient();

// Configures whether sentiment analysis should be performed. If not provided, sentiment analysis is not performed.
const analyzeQueryTextSentiment = true;

async function detectIntentWithSentimentAnalysis() {
  const sessionId = Math.random().toString(36).substring(7);
  const sessionPath = cxClient.projectLocationAgentSessionPath(
    projectId,
    location,
    agentId,
    sessionId
  );

  // Construct detect intent request
  const request = {
    session: sessionPath,
    queryInput: {
      text: {
        text: query,
      },
      languageCode,
    },
    queryParams: {
      analyzeQueryTextSentiment: analyzeQueryTextSentiment,
    },
  };

  // Run request
  const [response] = await cxClient.detectIntent(request);
  console.log(`User Query: ${query}`);

  // Shows result of sentiment analysis (sentimentAnalysisResult)
  const sentimentAnalysis = response.queryResult.sentimentAnalysisResult;

  // Determines sentiment score of user query
  let sentiment;
  if (sentimentAnalysis.score < 0) {
    sentiment = 'negative';
  } else if (sentimentAnalysis.score > 0) {
    sentiment = 'positive';
  } else {
    sentiment = 'neutral';
  }
  console.log(
    `User input sentiment has a score of ${sentimentAnalysis.score}, which indicates ${sentiment} sentiment.`
  );
}

detectIntentWithSentimentAnalysis();

Python

To authenticate to Dialogflow, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

import uuid

from google.cloud.dialogflowcx_v3beta1.services.sessions import SessionsClient
from google.cloud.dialogflowcx_v3beta1.types import session


def run_sample():
    # TODO(developer): Update these values when running the function
    project_id = "YOUR-PROJECT-ID"
    location = "YOUR-LOCATION-ID"
    agent_id = "YOUR-AGENT-ID"
    text = "Perfect!"
    language_code = "en-us"

    detect_intent_with_sentiment_analysis(
        project_id,
        location,
        agent_id,
        text,
        language_code,
    )


def detect_intent_with_sentiment_analysis(
    project_id,
    location,
    agent_id,
    text,
    language_code,
):
    """Returns the result of detect intent with sentiment analysis"""

    client_options = None
    if location != "global":
        api_endpoint = f"{location}-dialogflow.googleapis.com:443"
        print(f"API Endpoint: {api_endpoint}\n")
        client_options = {"api_endpoint": api_endpoint}
    session_client = SessionsClient(client_options=client_options)
    session_id = str(uuid.uuid4())

    session_path = session_client.session_path(
        project=project_id,
        location=location,
        agent=agent_id,
        session=session_id,
    )

    text_input = session.TextInput(text=text)
    query_input = session.QueryInput(text=text_input, language_code=language_code)
    query_params = session.QueryParameters(
        analyze_query_text_sentiment=True,
    )
    request = session.DetectIntentRequest(
        session=session_path,
        query_input=query_input,
        query_params=query_params,
    )

    response = session_client.detect_intent(request=request)
    score = response.query_result.sentiment_analysis_result.score
    print("Sentiment Score: {score}")
    return score

Detect intent with text-to-speech response

The following samples show how to detect intent with a text-to-speech response.

Java

To authenticate to Dialogflow, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 


import com.google.api.gax.rpc.ApiException;
import com.google.cloud.dialogflow.cx.v3.AudioEncoding;
import com.google.cloud.dialogflow.cx.v3.AudioInput;
import com.google.cloud.dialogflow.cx.v3.DetectIntentRequest;
import com.google.cloud.dialogflow.cx.v3.DetectIntentResponse;
import com.google.cloud.dialogflow.cx.v3.InputAudioConfig;
import com.google.cloud.dialogflow.cx.v3.OutputAudioConfig;
import com.google.cloud.dialogflow.cx.v3.OutputAudioEncoding;
import com.google.cloud.dialogflow.cx.v3.QueryInput;
import com.google.cloud.dialogflow.cx.v3.SessionName;
import com.google.cloud.dialogflow.cx.v3.SessionsClient;
import com.google.cloud.dialogflow.cx.v3.SessionsSettings;
import com.google.cloud.dialogflow.cx.v3.SynthesizeSpeechConfig;
import com.google.protobuf.ByteString;
import java.io.FileInputStream;
import java.io.IOException;

public class DetectIntentSynthesizeTextToSpeechOutput {

  // DialogFlow API Detect Intent sample with synthesize TTS output.
  public static void main(String[] args) throws IOException, ApiException {
    String projectId = "my-project-id";
    String locationId = "my-location-id";
    String agentId = "my-agent-id";
    String audioFileName = "my-audio-file-name";
    int sampleRateHertz = 16000;
    String sessionId = "my-session-id";
    String languageCode = "my-language-code";

    detectIntent(
        projectId, locationId, agentId, audioFileName, sampleRateHertz, sessionId, languageCode);
  }

  public static void detectIntent(
      String projectId,
      String locationId,
      String agentId,
      String audioFileName,
      int sampleRateHertz,
      String sessionId,
      String languageCode)
      throws IOException, ApiException {

    SessionsSettings.Builder sessionsSettingsBuilder = SessionsSettings.newBuilder();
    if (locationId.equals("global")) {
      sessionsSettingsBuilder.setEndpoint("dialogflow.googleapis.com:443");
    } else {
      sessionsSettingsBuilder.setEndpoint(locationId + "-dialogflow.googleapis.com:443");
    }
    SessionsSettings sessionsSettings = sessionsSettingsBuilder.build();

    // Instantiates a client by setting the session name.
    // Format:`projects/<ProjectID>/locations/<LocationID>/agents/<AgentID>/sessions/<SessionID>`

    // Note: close() needs to be called on the SessionsClient object to clean up resources
    // such as threads. In the example below, try-with-resources is used,
    // which automatically calls close().
    try (SessionsClient sessionsClient = SessionsClient.create(sessionsSettings)) {
      SessionName session =
          SessionName.ofProjectLocationAgentSessionName(projectId, locationId, agentId, sessionId);

      // TODO : Uncomment if you want to print session path
      // System.out.println("Session Path: " + session.toString());
      InputAudioConfig inputAudioConfig =
          InputAudioConfig.newBuilder()
              .setAudioEncoding(AudioEncoding.AUDIO_ENCODING_LINEAR_16)
              .setSampleRateHertz(sampleRateHertz)
              .build();

      try (FileInputStream audioStream = new FileInputStream(audioFileName)) {
        // Subsequent requests must **only** contain the audio data.
        // Following messages: audio chunks. We just read the file in fixed-size chunks. In reality
        // you would split the user input by time.
        byte[] buffer = new byte[4096];
        int bytes = audioStream.read(buffer);
        AudioInput audioInput =
            AudioInput.newBuilder()
                .setAudio(ByteString.copyFrom(buffer, 0, bytes))
                .setConfig(inputAudioConfig)
                .build();
        QueryInput queryInput =
            QueryInput.newBuilder()
                .setAudio(audioInput)
                .setLanguageCode("en-US") // languageCode = "en-US"
                .build();

        SynthesizeSpeechConfig speechConfig =
            SynthesizeSpeechConfig.newBuilder().setSpeakingRate(1.25).setPitch(10.0).build();

        OutputAudioConfig outputAudioConfig =
            OutputAudioConfig.newBuilder()
                .setAudioEncoding(OutputAudioEncoding.OUTPUT_AUDIO_ENCODING_LINEAR_16)
                .setSynthesizeSpeechConfig(speechConfig)
                .build();

        DetectIntentRequest request =
            DetectIntentRequest.newBuilder()
                .setSession(session.toString())
                .setQueryInput(queryInput)
                .setOutputAudioConfig(outputAudioConfig)
                .build();

        // Performs the detect intent request.
        DetectIntentResponse response = sessionsClient.detectIntent(request);

        // Display the output audio config retrieved from the response.
        OutputAudioConfig audioConfigFromResponse = response.getOutputAudioConfig();

        System.out.println("====================");
        System.out.format("Output Audio Config: %s \n", audioConfigFromResponse.toString());
      }
    }
  }
}

Node.js

To authenticate to Dialogflow, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 


// Imports the Cx library
const {SessionsClient} = require('@google-cloud/dialogflow-cx');

/**
 * TODO(developer): Uncomment the following lines before running the sample.
 */
// const projectId = 'ID of GCP project associated with your Dialogflow agent';
// const sessionId = `user specific ID of session, e.g. 12345`;
// const query = `phrase(s) to pass to detect, e.g. I'd like to reserve a room for six people`;
// const languageCode = 'BCP-47 language code, e.g. en-US';
// const outputFile = `path for audio output file, e.g. ./resources/myOutput.wav`;

// Instantiates a Sessions client
const sessionsClient = new SessionsClient();

// Define session path
const sessionPath = sessionsClient.projectLocationAgentSessionPath(
  projectId,
  location,
  agentId,
  sessionId
);
const fs = require('fs');
const util = require('util');

async function detectIntentSynthesizeTTSResponse() {
  // Configuration of how speech should be synthesized. See https://cloud.google.com/dialogflow/cx/docs/reference/rest/v3/OutputAudioConfig#SynthesizeSpeechConfig
  const synthesizeSpeechConfig = {
    speakingRate: 1.25,
    pitch: 10.0,
  };

  // Constructs the audio query request
  const request = {
    session: sessionPath,
    queryInput: {
      text: {
        text: query,
      },
      languageCode: languageCode,
    },
    outputAudioConfig: {
      audioEncoding: 'OUTPUT_AUDIO_ENCODING_LINEAR_16',
      synthesizeSpeechConfig: synthesizeSpeechConfig,
    },
  };

  // Sends the detectIntent request
  const [response] = await sessionsClient.detectIntent(request);
  // Output audio configurations
  console.log(
    `Speaking Rate: ${response.outputAudioConfig.synthesizeSpeechConfig.speakingRate}`
  );
  console.log(
    `Pitch: ${response.outputAudioConfig.synthesizeSpeechConfig.pitch}`
  );

  const audioFile = response.outputAudio;
  // Writes audio content to output file
  util.promisify(fs.writeFile)(outputFile, audioFile, 'binary');
  console.log(`Audio content written to file: ${outputFile}`);
}
detectIntentSynthesizeTTSResponse();

Python

To authenticate to Dialogflow, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

import uuid

from google.cloud.dialogflowcx_v3.services.sessions import SessionsClient
from google.cloud.dialogflowcx_v3.types import audio_config
from google.cloud.dialogflowcx_v3.types import session


def run_sample():
    # TODO(developer): Update these values when running the function
    project_id = "YOUR-PROJECT-ID"
    location = "YOUR-LOCATION-ID"
    agent_id = "YOUR-AGENT-ID"
    text = "YOUR-TEXT"
    audio_encoding = "YOUR-AUDIO-ENCODING"
    language_code = "YOUR-LANGUAGE-CODE"
    output_file = "YOUR-OUTPUT-FILE"

    detect_intent_synthesize_tts_response(
        project_id,
        location,
        agent_id,
        text,
        audio_encoding,
        language_code,
        output_file,
    )


def detect_intent_synthesize_tts_response(
    project_id,
    location,
    agent_id,
    text,
    audio_encoding,
    language_code,
    output_file,
):
    """Returns the result of detect intent with synthesized response."""
    client_options = None
    if location != "global":
        api_endpoint = f"{location}-dialogflow.googleapis.com:443"
        print(f"API Endpoint: {api_endpoint}\n")
        client_options = {"api_endpoint": api_endpoint}
    session_client = SessionsClient(client_options=client_options)
    session_id = str(uuid.uuid4())

    # Constructs the audio query request
    session_path = session_client.session_path(
        project=project_id,
        location=location,
        agent=agent_id,
        session=session_id,
    )
    text_input = session.TextInput(text=text)
    query_input = session.QueryInput(text=text_input, language_code=language_code)
    synthesize_speech_config = audio_config.SynthesizeSpeechConfig(
        speaking_rate=1.25,
        pitch=10.0,
    )
    output_audio_config = audio_config.OutputAudioConfig(
        synthesize_speech_config=synthesize_speech_config,
        audio_encoding=audio_config.OutputAudioEncoding[audio_encoding],
    )
    request = session.DetectIntentRequest(
        session=session_path,
        query_input=query_input,
        output_audio_config=output_audio_config,
    )

    response = session_client.detect_intent(request=request)
    print(
        "Speaking Rate: "
        f"{response.output_audio_config.synthesize_speech_config.speaking_rate}"
    )
    print("Pitch: " f"{response.output_audio_config.synthesize_speech_config.pitch}")
    with open(output_file, "wb") as fout:
        fout.write(response.output_audio)
    print(f"Audio content written to file: {output_file}")

Detect intent with webhook disabled

The following samples show how to detect intent with webhook calls disabled.

Java

To authenticate to Dialogflow, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 


import com.google.api.gax.rpc.ApiException;
import com.google.cloud.dialogflow.cx.v3.DetectIntentRequest;
import com.google.cloud.dialogflow.cx.v3.DetectIntentResponse;
import com.google.cloud.dialogflow.cx.v3.QueryInput;
import com.google.cloud.dialogflow.cx.v3.QueryParameters;
import com.google.cloud.dialogflow.cx.v3.QueryResult;
import com.google.cloud.dialogflow.cx.v3.SessionName;
import com.google.cloud.dialogflow.cx.v3.SessionsClient;
import com.google.cloud.dialogflow.cx.v3.SessionsSettings;
import com.google.cloud.dialogflow.cx.v3.TextInput;
import com.google.common.collect.Maps;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

public class DetectIntentDisableWebhook {

  public static void main(String[] args) throws IOException, ApiException {
    String projectId = "my-project-id";
    String locationId = "global";
    String agentId = "my-agent-id";
    String sessionId = "my-UUID";
    List<String> texts = new ArrayList<>(List.of("my-list", "of-texts"));
    String languageCode = "en";

    detectIntent(projectId, locationId, agentId, sessionId, texts, languageCode);
  }

  // DialogFlow API Detect Intent sample with webhook disabled.
  public static Map<String, QueryResult> detectIntent(
      String projectId,
      String locationId,
      String agentId,
      String sessionId,
      List<String> texts,
      String languageCode)
      throws IOException, ApiException {
    SessionsSettings.Builder sessionsSettingsBuilder = SessionsSettings.newBuilder();
    if (locationId.equals("global")) {
      sessionsSettingsBuilder.setEndpoint("dialogflow.googleapis.com:443");
    } else {
      sessionsSettingsBuilder.setEndpoint(locationId + "-dialogflow.googleapis.com:443");
    }
    SessionsSettings sessionsSettings = sessionsSettingsBuilder.build();

    Map<String, QueryResult> queryResults = Maps.newHashMap();

    // Instantiates a client by setting the session name.
    // Format:`projects/<ProjectID>/locations/<LocationID>/agents/<AgentID>/sessions/<SessionID>`

    // Note: close() needs to be called on the SessionsClient object to clean up resources
    // such as threads. In the example below, try-with-resources is used,
    // which automatically calls close().
    try (SessionsClient sessionsClient = SessionsClient.create(sessionsSettings)) {
      SessionName session =
          SessionName.ofProjectLocationAgentSessionName(projectId, locationId, agentId, sessionId);

      // TODO : Uncomment if you want to print session path
      // System.out.println("Session Path: " + session.toString());

      // Detect intents for each text input.
      for (String text : texts) {
        // Set the text (hello) for the query.
        TextInput.Builder textInput = TextInput.newBuilder().setText(text);

        // Build the query with the TextInput and language code (en-US).
        QueryInput queryInput =
            QueryInput.newBuilder().setText(textInput).setLanguageCode(languageCode).build();

        // Build the query parameters and setDisableWebhook to true.
        QueryParameters queryParameters =
            QueryParameters.newBuilder().setDisableWebhook(true).build();

        // Build the DetectIntentRequest with the SessionName, QueryInput, and QueryParameters.
        DetectIntentRequest request =
            DetectIntentRequest.newBuilder()
                .setSession(session.toString())
                .setQueryInput(queryInput)
                .setQueryParams(queryParameters)
                .build();
        System.out.println(request.toString());

        // Performs the detect intent request.
        DetectIntentResponse response = sessionsClient.detectIntent(request);

        // Display the query result.
        QueryResult queryResult = response.getQueryResult();

        // TODO : Uncomment if you want to print queryResult
        // System.out.println("====================");
        // System.out.format("Query Text: '%s'\n", queryResult.getText());
        // System.out.format(
        //     "Detected Intent: %s (confidence: %f)\n",
        //     queryResult.getIntent().getDisplayName(),
        //         queryResult.getIntentDetectionConfidence());

        queryResults.put(text, queryResult);
      }
    }
    return queryResults;
  }
}

Node.js

To authenticate to Dialogflow, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

/**
 * TODO(developer): Uncomment these variables before running the sample.
 */
// const projectId = 'my-project';
// const location = 'global';
// const agentId = 'my-agent';
// const query = 'Hello';
// const languageCode = 'en'

const {SessionsClient} = require('@google-cloud/dialogflow-cx');
/**
 * Example for regional endpoint:
 *   const location = 'us-central1'
 *   const client = new SessionsClient({apiEndpoint: 'us-central1-dialogflow.googleapis.com'})
 */
const client = new SessionsClient();

async function detectIntentText() {
  const sessionId = Math.random().toString(36).substring(7);
  const sessionPath = client.projectLocationAgentSessionPath(
    projectId,
    location,
    agentId,
    sessionId
  );
  console.info(sessionPath);

  const request = {
    session: sessionPath,
    queryParams: {
      disableWebhook: true,
    },
    queryInput: {
      text: {
        text: query,
      },
      languageCode,
    },
  };
  const [response] = await client.detectIntent(request);
  console.log(`Detect Intent Request: ${request.queryParams.disableWebhook}`);
  for (const message of response.queryResult.responseMessages) {
    if (message.text) {
      console.log(`Agent Response: ${message.text.text}`);
    }
  }
}

detectIntentText();

Python

To authenticate to Dialogflow, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

import uuid

from google.cloud.dialogflowcx_v3.services.sessions import SessionsClient
from google.cloud.dialogflowcx_v3.types import session


def run_sample():
    # TODO(developer): Update these values when running the function
    project_id = "YOUR-PROJECT-ID"
    location = "YOUR-LOCATION-ID"
    agent_id = "YOUR-AGENT-ID"
    text = "Perfect!"
    language_code = "en-us"

    detect_intent_disabled_webhook(
        project_id,
        location,
        agent_id,
        text,
        language_code,
    )


def detect_intent_disabled_webhook(
    project_id,
    location,
    agent_id,
    text,
    language_code,
):
    """Returns the result of detect intent with sentiment analysis"""

    client_options = None
    if location != "global":
        api_endpoint = f"{location}-dialogflow.googleapis.com:443"
        print(f"API Endpoint: {api_endpoint}\n")
        client_options = {"api_endpoint": api_endpoint}
    session_client = SessionsClient(client_options=client_options)
    session_id = str(uuid.uuid4())
    session_path = session_client.session_path(
        project=project_id,
        location=location,
        agent=agent_id,
        session=session_id,
    )

    # Prepare request
    text_input = session.TextInput(text=text)
    query_input = session.QueryInput(text=text_input, language_code=language_code)
    query_params = session.QueryParameters(
        disable_webhook=True,
    )
    request = session.DetectIntentRequest(
        session=session_path,
        query_input=query_input,
        query_params=query_params,
    )

    response = session_client.detect_intent(request=request)
    print(f"Detect Intent Request: {request.query_params.disable_webhook}")
    response_text = []
    for message in response.query_result.response_messages:
        if message.text:
            curr_response_text = message.text.text
            print(f"Agent Response: {curr_response_text}")
            response_text.append(curr_response_text)
    return response_text

Streaming detect intent with audio input

The following samples show how to stream audio input to a streaming detect intent request.

Java

To authenticate to Dialogflow, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 


import com.google.api.gax.rpc.ApiException;
import com.google.api.gax.rpc.BidiStream;
import com.google.cloud.dialogflow.cx.v3beta1.AudioEncoding;
import com.google.cloud.dialogflow.cx.v3beta1.AudioInput;
import com.google.cloud.dialogflow.cx.v3beta1.InputAudioConfig;
import com.google.cloud.dialogflow.cx.v3beta1.OutputAudioConfig;
import com.google.cloud.dialogflow.cx.v3beta1.OutputAudioEncoding;
import com.google.cloud.dialogflow.cx.v3beta1.QueryInput;
import com.google.cloud.dialogflow.cx.v3beta1.QueryResult;
import com.google.cloud.dialogflow.cx.v3beta1.SessionName;
import com.google.cloud.dialogflow.cx.v3beta1.SessionsClient;
import com.google.cloud.dialogflow.cx.v3beta1.SessionsSettings;
import com.google.cloud.dialogflow.cx.v3beta1.SsmlVoiceGender;
import com.google.cloud.dialogflow.cx.v3beta1.StreamingDetectIntentRequest;
import com.google.cloud.dialogflow.cx.v3beta1.StreamingDetectIntentResponse;
import com.google.cloud.dialogflow.cx.v3beta1.SynthesizeSpeechConfig;
import com.google.cloud.dialogflow.cx.v3beta1.VoiceSelectionParams;
import com.google.protobuf.ByteString;
import java.io.FileInputStream;
import java.io.IOException;

public abstract class DetectIntentStream {

  // DialogFlow API Detect Intent sample with audio files processes as an audio stream.
  public static void detectIntentStream(
      String projectId, String locationId, String agentId, String sessionId, String audioFilePath)
      throws ApiException, IOException {
    SessionsSettings.Builder sessionsSettingsBuilder = SessionsSettings.newBuilder();
    if ("global".equals(locationId)) {
      sessionsSettingsBuilder.setEndpoint("dialogflow.googleapis.com:443");
    } else {
      sessionsSettingsBuilder.setEndpoint(locationId + "-dialogflow.googleapis.com:443");
    }
    SessionsSettings sessionsSettings = sessionsSettingsBuilder.build();

    // Instantiates a client by setting the session name.
    // Format: `projects/<ProjectID>/locations/<LocationID>/agents/<AgentID>/sessions/<SessionID>`
    // Using the same `sessionId` between requests allows continuation of the conversation.

    // Note: close() needs to be called on the SessionsClient object to clean up resources
    // such as threads. In the example below, try-with-resources is used,
    // which automatically calls close().
    try (SessionsClient sessionsClient = SessionsClient.create(sessionsSettings)) {
      SessionName session = SessionName.of(projectId, locationId, agentId, sessionId);

      // Instructs the speech recognizer how to process the audio content.
      // Note: hard coding audioEncoding and sampleRateHertz for simplicity.
      // Audio encoding of the audio content sent in the query request.
      InputAudioConfig inputAudioConfig =
          InputAudioConfig.newBuilder()
              .setAudioEncoding(AudioEncoding.AUDIO_ENCODING_LINEAR_16)
              .setSampleRateHertz(16000) // sampleRateHertz = 16000
              .build();

      // Build the AudioInput with the InputAudioConfig.
      AudioInput audioInput = AudioInput.newBuilder().setConfig(inputAudioConfig).build();

      // Build the query with the InputAudioConfig.
      QueryInput queryInput =
          QueryInput.newBuilder()
              .setAudio(audioInput)
              .setLanguageCode("en-US") // languageCode = "en-US"
              .build();

      // Create the Bidirectional stream
      BidiStream<StreamingDetectIntentRequest, StreamingDetectIntentResponse> bidiStream =
          sessionsClient.streamingDetectIntentCallable().call();

      // Specify sssml name and gender
      VoiceSelectionParams voiceSelection =
          // Voices that are available https://cloud.google.com/text-to-speech/docs/voices
          VoiceSelectionParams.newBuilder()
              .setName("en-US-Standard-F")
              .setSsmlGender(SsmlVoiceGender.SSML_VOICE_GENDER_FEMALE)
              .build();

      SynthesizeSpeechConfig speechConfig =
          SynthesizeSpeechConfig.newBuilder().setVoice(voiceSelection).build();

      // Setup audio config
      OutputAudioConfig audioConfig =
          // Output enconding explanation
          // https://cloud.google.com/dialogflow/cx/docs/reference/rpc/google.cloud.dialogflow.cx.v3#outputaudioencoding
          OutputAudioConfig.newBuilder()
              .setAudioEncoding(OutputAudioEncoding.OUTPUT_AUDIO_ENCODING_UNSPECIFIED)
              .setAudioEncodingValue(1)
              .setSynthesizeSpeechConfig(speechConfig)
              .build();

      // The first request must **only** contain the audio configuration:
      bidiStream.send(
          StreamingDetectIntentRequest.newBuilder()
              .setSession(session.toString())
              .setQueryInput(queryInput)
              .setOutputAudioConfig(audioConfig)
              .build());

      try (FileInputStream audioStream = new FileInputStream(audioFilePath)) {
        // Subsequent requests must **only** contain the audio data.
        // Following messages: audio chunks. We just read the file in fixed-size chunks. In reality
        // you would split the user input by time.
        byte[] buffer = new byte[4096];
        int bytes;
        while ((bytes = audioStream.read(buffer)) != -1) {
          AudioInput subAudioInput =
              AudioInput.newBuilder().setAudio(ByteString.copyFrom(buffer, 0, bytes)).build();
          QueryInput subQueryInput =
              QueryInput.newBuilder()
                  .setAudio(subAudioInput)
                  .setLanguageCode("en-US") // languageCode = "en-US"
                  .build();
          bidiStream.send(
              StreamingDetectIntentRequest.newBuilder().setQueryInput(subQueryInput).build());
        }
      }

      // Tell the service you are done sending data.
      bidiStream.closeSend();

      for (StreamingDetectIntentResponse response : bidiStream) {
        QueryResult queryResult = response.getDetectIntentResponse().getQueryResult();
        System.out.println("====================");
        System.out.format("Query Text: '%s'\n", queryResult.getTranscript());
        System.out.format(
            "Detected Intent: %s (confidence: %f)\n",
            queryResult.getMatch().getIntent().getDisplayName(),
            queryResult.getMatch().getConfidence());
      }
    }
  }
}

Node.js

To authenticate to Dialogflow, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

/**
 * TODO(developer): Uncomment these variables before running the sample.
 */
// const projectId = 'my-project';
// const location = 'global';
// const agentId = 'my-agent';
// const audioFileName = '/path/to/audio.raw';
// const encoding = 'AUDIO_ENCODING_LINEAR_16';
// const sampleRateHertz = 16000;
// const languageCode = 'en'

// Imports the Google Cloud Some API library
const {SessionsClient} = require('@google-cloud/dialogflow-cx');
/**
 * Example for regional endpoint:
 *   const location = 'us-central1'
 *   const client = new SessionsClient({apiEndpoint: 'us-central1-dialogflow.googleapis.com'})
 */
const client = new SessionsClient();

const fs = require('fs');
const util = require('util');
const {Transform, pipeline} = require('stream');
const pump = util.promisify(pipeline);

async function detectIntentAudio() {
  const sessionId = Math.random().toString(36).substring(7);
  const sessionPath = client.projectLocationAgentSessionPath(
    projectId,
    location,
    agentId,
    sessionId
  );
  console.info(sessionPath);

  // Create a stream for the streaming request.
  const detectStream = client
    .streamingDetectIntent()
    .on('error', console.error)
    .on('data', data => {
      if (data.recognitionResult) {
        console.log(
          `Intermediate Transcript: ${data.recognitionResult.transcript}`
        );
      } else {
        console.log('Detected Intent:');
        const result = data.detectIntentResponse.queryResult;

        console.log(`User Query: ${result.transcript}`);
        for (const message of result.responseMessages) {
          if (message.text) {
            console.log(`Agent Response: ${message.text.text}`);
          }
        }
        if (result.match.intent) {
          console.log(`Matched Intent: ${result.match.intent.displayName}`);
        }
        console.log(`Current Page: ${result.currentPage.displayName}`);
      }
    });

  // Write the initial stream request to config for audio input.
  const initialStreamRequest = {
    session: sessionPath,
    queryInput: {
      audio: {
        config: {
          audioEncoding: encoding,
          sampleRateHertz: sampleRateHertz,
          synthesize_speech_config: {
            voice: {
              // Set's the name and gender of the ssml voice
              name: 'en-GB-Standard-A',
              ssml_gender: 'SSML_VOICE_GENDER_FEMALE',
            },
          },
          singleUtterance: true,
        },
      },
      languageCode: languageCode,
    },
  };
  detectStream.write(initialStreamRequest);

  // Stream the audio from audio file to Dialogflow.
  await pump(
    fs.createReadStream(audioFileName),
    // Format the audio stream into the request format.
    new Transform({
      objectMode: true,
      transform: (obj, _, next) => {
        next(null, {queryInput: {audio: {audio: obj}}});
      },
    }),
    detectStream
  );
}

detectIntentAudio();

Python

To authenticate to Dialogflow, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

def run_sample():
    # TODO(developer): Replace these values when running the function
    project_id = "YOUR-PROJECT-ID"
    # For more information about regionalization see https://cloud.google.com/dialogflow/cx/docs/how/region
    location_id = "YOUR-LOCATION-ID"
    # For more info on agents see https://cloud.google.com/dialogflow/cx/docs/concept/agent
    agent_id = "YOUR-AGENT-ID"
    agent = f"projects/{project_id}/locations/{location_id}/agents/{agent_id}"
    # For more information on sessions see https://cloud.google.com/dialogflow/cx/docs/concept/session
    session_id = uuid.uuid4()
    audio_file_path = "YOUR-AUDIO-FILE-PATH"
    # For more supported languages see https://cloud.google.com/dialogflow/es/docs/reference/language
    language_code = "en-us"

    detect_intent_stream(agent, session_id, audio_file_path, language_code)


def detect_intent_stream(agent, session_id, audio_file_path, language_code):
    """Returns the result of detect intent with streaming audio as input.

    Using the same `session_id` between requests allows continuation
    of the conversation."""
    session_path = f"{agent}/sessions/{session_id}"
    print(f"Session path: {session_path}\n")
    client_options = None
    agent_components = AgentsClient.parse_agent_path(agent)
    location_id = agent_components["location"]
    if location_id != "global":
        api_endpoint = f"{location_id}-dialogflow.googleapis.com:443"
        print(f"API Endpoint: {api_endpoint}\n")
        client_options = {"api_endpoint": api_endpoint}
    session_client = SessionsClient(client_options=client_options)

    input_audio_config = audio_config.InputAudioConfig(
        audio_encoding=audio_config.AudioEncoding.AUDIO_ENCODING_LINEAR_16,
        sample_rate_hertz=24000,
    )

    def request_generator():
        audio_input = session.AudioInput(config=input_audio_config)
        query_input = session.QueryInput(audio=audio_input, language_code=language_code)
        voice_selection = audio_config.VoiceSelectionParams()
        synthesize_speech_config = audio_config.SynthesizeSpeechConfig()
        output_audio_config = audio_config.OutputAudioConfig()

        # Sets the voice name and gender
        voice_selection.name = "en-GB-Standard-A"
        voice_selection.ssml_gender = (
            audio_config.SsmlVoiceGender.SSML_VOICE_GENDER_FEMALE
        )

        synthesize_speech_config.voice = voice_selection

        # Sets the audio encoding
        output_audio_config.audio_encoding = (
            audio_config.OutputAudioEncoding.OUTPUT_AUDIO_ENCODING_UNSPECIFIED
        )
        output_audio_config.synthesize_speech_config = synthesize_speech_config

        # The first request contains the configuration.
        yield session.StreamingDetectIntentRequest(
            session=session_path,
            query_input=query_input,
            output_audio_config=output_audio_config,
        )

        # Here we are reading small chunks of audio data from a local
        # audio file.  In practice these chunks should come from
        # an audio input device.
        with open(audio_file_path, "rb") as audio_file:
            while True:
                chunk = audio_file.read(4096)
                if not chunk:
                    break
                # The later requests contains audio data.
                audio_input = session.AudioInput(audio=chunk)
                query_input = session.QueryInput(audio=audio_input)
                yield session.StreamingDetectIntentRequest(query_input=query_input)

    responses = session_client.streaming_detect_intent(requests=request_generator())

    print("=" * 20)
    for response in responses:
        print(f'Intermediate transcript: "{response.recognition_result.transcript}".')

    # Note: The result from the last response is the final transcript along
    # with the detected content.
    response = response.detect_intent_response
    print(f"Query text: {response.query_result.transcript}")
    response_messages = [
        " ".join(msg.text.text) for msg in response.query_result.response_messages
    ]
    print(f"Response text: {' '.join(response_messages)}\n")

Streaming detect intent with partial response enabled

The following samples show how to use streaming detect intent with partial responses.

Java

To authenticate to Dialogflow, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 


import com.google.api.gax.rpc.ApiException;
import com.google.api.gax.rpc.BidiStream;
import com.google.cloud.dialogflow.cx.v3.AudioEncoding;
import com.google.cloud.dialogflow.cx.v3.AudioInput;
import com.google.cloud.dialogflow.cx.v3.InputAudioConfig;
import com.google.cloud.dialogflow.cx.v3.OutputAudioConfig;
import com.google.cloud.dialogflow.cx.v3.OutputAudioEncoding;
import com.google.cloud.dialogflow.cx.v3.QueryInput;
import com.google.cloud.dialogflow.cx.v3.SessionName;
import com.google.cloud.dialogflow.cx.v3.SessionsClient;
import com.google.cloud.dialogflow.cx.v3.SessionsSettings;
import com.google.cloud.dialogflow.cx.v3.SsmlVoiceGender;
import com.google.cloud.dialogflow.cx.v3.StreamingDetectIntentRequest;
import com.google.cloud.dialogflow.cx.v3.StreamingDetectIntentResponse;
import com.google.cloud.dialogflow.cx.v3.SynthesizeSpeechConfig;
import com.google.cloud.dialogflow.cx.v3.VoiceSelectionParams;
import com.google.protobuf.ByteString;
import java.io.FileInputStream;
import java.io.IOException;

public class DetectIntentStreamingPartialResponse {

  // DialogFlow API Detect Intent sample with audio files
  // that processes as an audio stream.
  public static void detectIntentStreamingPartialResponse(
      String projectId, String locationId, String agentId, String sessionId, String audioFilePath)
      throws ApiException, IOException {
    SessionsSettings.Builder sessionsSettingsBuilder = SessionsSettings.newBuilder();
    if (locationId.equals("global")) {
      sessionsSettingsBuilder.setEndpoint("dialogflow.googleapis.com:443");
    } else {
      sessionsSettingsBuilder.setEndpoint(locationId + "-dialogflow.googleapis.com:443");
    }
    SessionsSettings sessionsSettings = sessionsSettingsBuilder.build();

    // Instantiates a client by setting the session name.
    // Format:`projects/<ProjectID>/locations/<LocationID>/agents/<AgentID>/sessions/<SessionID>`
    // Using the same `sessionId` between requests allows continuation of the conversation.

    // Note: close() needs to be called on the SessionsClient object to clean up resources
    // such as threads. In the example below, try-with-resources is used,
    // which automatically calls close().
    try (SessionsClient sessionsClient = SessionsClient.create(sessionsSettings)) {
      SessionName session = SessionName.of(projectId, locationId, agentId, sessionId);

      // Instructs the speech recognizer how to process the audio content.
      // Note: hard coding audioEncoding and sampleRateHertz for simplicity.
      // Audio encoding of the audio content sent in the query request.
      InputAudioConfig inputAudioConfig =
          InputAudioConfig.newBuilder()
              .setAudioEncoding(AudioEncoding.AUDIO_ENCODING_LINEAR_16)
              .setSampleRateHertz(16000) // sampleRateHertz = 16000
              .build();

      // Build the AudioInput with the InputAudioConfig.
      AudioInput audioInput = AudioInput.newBuilder().setConfig(inputAudioConfig).build();

      // Build the query with the InputAudioConfig.
      QueryInput queryInput =
          QueryInput.newBuilder()
              .setAudio(audioInput)
              .setLanguageCode("en-US") // languageCode = "en-US"
              .build();

      // Create the Bidirectional stream
      BidiStream<StreamingDetectIntentRequest, StreamingDetectIntentResponse> bidiStream =
          sessionsClient.streamingDetectIntentCallable().call();

      // Specify sssml name and gender
      VoiceSelectionParams voiceSelection =
          // Voices that are available https://cloud.google.com/text-to-speech/docs/voices
          VoiceSelectionParams.newBuilder()
              .setName("en-GB-Standard-A")
              .setSsmlGender(SsmlVoiceGender.SSML_VOICE_GENDER_FEMALE)
              .build();

      SynthesizeSpeechConfig speechConfig =
          SynthesizeSpeechConfig.newBuilder().setVoice(voiceSelection).build();

      // Setup audio config
      OutputAudioConfig audioConfig =
          // Output encoding explanation
          // https://cloud.google.com/dialogflow/cx/docs/reference/rpc/google.cloud.dialogflow.cx.v3#outputaudioencoding
          OutputAudioConfig.newBuilder()
              .setAudioEncoding(OutputAudioEncoding.OUTPUT_AUDIO_ENCODING_UNSPECIFIED)
              .setAudioEncodingValue(1)
              .setSynthesizeSpeechConfig(speechConfig)
              .build();

      StreamingDetectIntentRequest streamingDetectIntentRequest =
          StreamingDetectIntentRequest.newBuilder()
              .setSession(session.toString())
              .setQueryInput(queryInput)
              .setEnablePartialResponse(true)
              .setOutputAudioConfig(audioConfig)
              .build();
      System.out.println(streamingDetectIntentRequest.toString());

      // The first request must **only** contain the audio configuration:
      bidiStream.send(streamingDetectIntentRequest);

      try (FileInputStream audioStream = new FileInputStream(audioFilePath)) {
        // Subsequent requests must **only** contain the audio data.
        // Following messages: audio chunks. We just read the file in fixed-size chunks. In reality
        // you would split the user input by time.
        byte[] buffer = new byte[4096];
        int bytes;
        while ((bytes = audioStream.read(buffer)) != -1) {
          AudioInput subAudioInput =
              AudioInput.newBuilder().setAudio(ByteString.copyFrom(buffer, 0, bytes)).build();
          QueryInput subQueryInput =
              QueryInput.newBuilder()
                  .setAudio(subAudioInput)
                  .setLanguageCode("en-US") // languageCode = "en-US"
                  .build();
          bidiStream.send(
              StreamingDetectIntentRequest.newBuilder().setQueryInput(subQueryInput).build());
        }
      }

      // Tell the service you are done sending data.
      bidiStream.closeSend();

      // TODO: Uncomment to print detectIntentResponse.

      //   for (StreamingDetectIntentResponse response : bidiStream) {
      //     QueryResult queryResult = response.getDetectIntentResponse().getQueryResult();
      //     System.out.println("====================");
      //     System.out.format("Query Text: '%s'\n", queryResult.getTranscript());
      //     System.out.format(
      //         "Detected Intent: %s (confidence: %f)\n",
      //         queryResult.getIntent()
      //         .getDisplayName(), queryResult.getIntentDetectionConfidence());
      //   }
    }
  }
}

Node.js

To authenticate to Dialogflow, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

/**
 * TODO(developer): Uncomment these variables before running the sample.
 */
// const projectId = 'my-project';
// const location = 'global';
// const agentId = 'my-agent';
// const audioFileName = '/path/to/audio.raw';
// const encoding = 'AUDIO_ENCODING_LINEAR_16';
// const sampleRateHertz = 16000;
// const languageCode = 'en';

const {SessionsClient} = require('@google-cloud/dialogflow-cx');
/**
 * Example for regional endpoint:
 *   const location = 'us-central1'
 *   const client = new SessionsClient({apiEndpoint: 'us-central1-dialogflow.googleapis.com'})
 */
const client = new SessionsClient();

const fs = require('fs');
const util = require('util');
const {Transform, pipeline} = require('stream');
const pump = util.promisify(pipeline);

async function streamingDetectIntentPartialResponse() {
  const sessionId = Math.random().toString(36).substring(7);
  const sessionPath = client.projectLocationAgentSessionPath(
    projectId,
    location,
    agentId,
    sessionId
  );

  const request = {
    session: sessionPath,
    queryInput: {
      audio: {
        config: {
          audio_encoding: encoding,
          sampleRateHertz: sampleRateHertz,
          singleUtterance: true,
        },
      },
      languageCode: languageCode,
    },
    enablePartialResponse: true,
  };

  const stream = await client.streamingDetectIntent();
  stream.on('data', data => {
    if (data.detectIntentResponse) {
      const result = data.detectIntentResponse.queryResult;

      for (const message of result.responseMessages) {
        if (message.text) {
          console.log(`Agent Response: ${message.text.text}`);
        }
      }
    }
  });
  stream.on('error', err => {
    console.log(err);
  });
  stream.on('end', () => {
    /* API call completed */
  });
  stream.write(request);

  // Stream the audio from audio file to Dialogflow.
  await pump(
    fs.createReadStream(audioFileName),
    // Format the audio stream into the request format.
    new Transform({
      objectMode: true,
      transform: (obj, _, next) => {
        next(null, {queryInput: {audio: {audio: obj}}});
      },
    }),
    stream
  );
}
streamingDetectIntentPartialResponse();

Python

To authenticate to Dialogflow, set up Application Default Credentials. For more information, see Set up authentication for a local development environment. 

import uuid

from google.cloud.dialogflowcx_v3.services.sessions import SessionsClient
from google.cloud.dialogflowcx_v3.types import audio_config
from google.cloud.dialogflowcx_v3.types import InputAudioConfig
from google.cloud.dialogflowcx_v3.types import session


def run_sample():
    """
    TODO(developer): Modify these variables before running the sample.
    """
    project_id = "YOUR-PROJECT-ID"
    location = "YOUR-LOCATION-ID"
    agent_id = "YOUR-AGENT-ID"
    audio_file_name = "YOUR-AUDIO-FILE-PATH"
    encoding = "AUDIO_ENCODING_LINEAR_16"
    sample_rate_hertz = 16000
    language_code = "en"

    streaming_detect_intent_partial_response(
        project_id,
        location,
        agent_id,
        audio_file_name,
        encoding,
        sample_rate_hertz,
        language_code,
    )


def streaming_detect_intent_partial_response(
    project_id,
    location,
    agent_id,
    audio_file_name,
    encoding,
    sample_rate_hertz,
    language_code,
):
    client_options = None
    if location != "global":
        api_endpoint = f"{location}-dialogflow.googleapis.com:443"
        print(f"API Endpoint: {api_endpoint}\n")
        client_options = {"api_endpoint": api_endpoint}
    session_client = SessionsClient(client_options=client_options)
    session_id = str(uuid.uuid4())

    session_path = session_client.session_path(
        project=project_id,
        location=location,
        agent=agent_id,
        session=session_id,
    )

    def request_generator():
        audio_encoding = audio_config.AudioEncoding[encoding]
        config = InputAudioConfig(
            audio_encoding=audio_encoding,
            sample_rate_hertz=sample_rate_hertz,
            single_utterance=True,
        )
        audio_input = session.AudioInput(config=config)
        query_input = session.QueryInput(audio=audio_input, language_code=language_code)
        yield session.StreamingDetectIntentRequest(
            session=session_path,
            query_input=query_input,
            enable_partial_response=True,
        )
        # Here we are reading small chunks of audio data from a local
        # audio file.  In practice these chunks should come from
        # an audio input device.
        with open(audio_file_name, "rb") as audio_file:
            while True:
                chunk = audio_file.read(4096)
                if not chunk:
                    break
                # The later requests contains audio data.
                audio_input = session.AudioInput(audio=chunk, config=config)
                query_input = session.QueryInput(
                    audio=audio_input, language_code=language_code
                )
                yield session.StreamingDetectIntentRequest(
                    session=session_path,
                    query_input=query_input,
                    enable_partial_response=True,
                )

    responses = session_client.streaming_detect_intent(requests=request_generator())

    print("=" * 20)
    for response in responses:
        print(f'Intermediate transcript: "{response.recognition_result.transcript}".')

    # Note: The result from the last response is the final transcript along
    # with the detected content.
    response = response.detect_intent_response
    print(f"Query text: {response.query_result.transcript}")
    response_messages = [
        " ".join(msg.text.text) for msg in response.query_result.response_messages
    ]
    print(f"Response text: {' '.join(response_messages)}\n")

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