diff --git a/dialogflow-cx/package.json b/dialogflow-cx/package.json
index ec3faf35942..6b29093efea 100644
--- a/dialogflow-cx/package.json
+++ b/dialogflow-cx/package.json
@@ -13,7 +13,8 @@
     "test": "c8 mocha --timeout 600000 test/*.js"
   },
   "dependencies": {
-    "@google-cloud/dialogflow-cx": "^1.2.0"
+    "@google-cloud/dialogflow-cx": "^1.2.0",
+    "uuid": "^8.3.1"
   },
   "devDependencies": {
     "c8": "^7.3.0",
diff --git a/dialogflow-cx/quickstart.js b/dialogflow-cx/quickstart.js
index 166d7556732..20fb0df9733 100644
--- a/dialogflow-cx/quickstart.js
+++ b/dialogflow-cx/quickstart.js
@@ -14,30 +14,81 @@
 
 'use strict';
 
-async function main(projectId = 'my-project', location = 'us', agent = 'foo') {
+async function main(
+  projectId,
+  location,
+  agentId,
+  audioFileName,
+  encoding,
+  sampleRateHertz,
+  languageCode
+) {
   // [START dialogflow_cx_quickstart]
   /**
    * TODO(developer): Uncomment these variables before running the sample.
    */
   // const projectId = 'my-project';
-  // const location = 'us';
-  // const agent = 'foo';
+  // 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 {IntentsClient} = require('@google-cloud/dialogflow-cx');
-  const client = new IntentsClient();
-  async function listIntents() {
-    const parent = client.agentPath(projectId, location, agent);
-    console.info(parent);
-    // TODO: implement a quickstart that does something useful:
-    /*
-    const [intents] = await client.listIntents({
-      parent,
-    });
-    console.info(intents);
-    */
+  const {SessionsClient} = require('@google-cloud/dialogflow-cx');
+  const client = new SessionsClient();
+
+  const fs = require('fs');
+  const util = require('util');
+  // Assumes uuid module has been installed from npm,
+  // npm i uuid:
+  const {v4} = require('uuid');
+
+  async function detectIntentAudio() {
+    const sessionId = v4();
+    const sessionPath = client.projectLocationAgentSessionPath(
+      projectId,
+      location,
+      agentId,
+      sessionId
+    );
+
+    // 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}`
+    );
   }
-  listIntents();
+
+  detectIntentAudio();
   // [END dialogflow_cx_quickstart]
 }
 
diff --git a/dialogflow-cx/test/quickstart.js b/dialogflow-cx/test/quickstart.js
index 62c44f8c5e0..eca23119728 100644
--- a/dialogflow-cx/test/quickstart.js
+++ b/dialogflow-cx/test/quickstart.js
@@ -30,7 +30,15 @@ const project = process.env.GCLOUD_PROJECT;
 
 describe('Quickstart', () => {
   it('should run quickstart', async () => {
-    const stdout = execSync(`node ./quickstart.js ${project}`, {cwd});
-    assert.match(stdout, /projects/);
+    try {
+      // TODO: write an actual functional test:
+      execSync(
+        `node ./quickstart.js ${project} global my-agent audio.raw AUDIO_ENCODING_LINEAR_16 16000 en`,
+        {cwd}
+      );
+      assert('unreachable');
+    } catch (err) {
+      assert.match(err.message, /no such file or directory, open 'audio.raw/);
+    }
   });
 });