How can I retrieve the assistant's reply from a thread using Node.js?

I'm trying to access the response message from the assistant in a thread using Node.js and the OpenAI API. I create an assistant, start a thread with a user message, and then run it. However, I'm unsure how to specifically extract the assistant's reply from the list of thread messages.

Here is my code:

JAVASCRIPTCopied
const openai = new OpenAI({
  apiKey: '****', // defaults to process.env["OPENAI_API_KEY"]
});

// Add the file to the assistant
const assistant = await openai.beta.assistants.create({
  instructions: "You are a teacher. Use your knowledge base to best respond to student queries.",
  model: "gpt-4-1106-preview",
  tools: [{ type: "retrieval" }],
  // file_ids: ["file-8GPAe7Xx8lDGePc6ETMu9kN4"]
});

const thread = await openai.beta.threads.create({
  messages: [
    {
      "role": "user",
      "content": "Let me know the content of the file.",
      // "file_ids": ["file-8GPAe7Xx8lDGePc6ETMu9kN4"]
    }
  ]
});

const run = await openai.beta.threads.runs.create(
  thread.id,
  {
    assistant_id: assistant.id,
    instructions: "Please address the user as Jane Doe. The user has a premium account."
  }
);

const run_response = await openai.beta.threads.runs.retrieve(
  thread.id,
  run.id
);
const messages: any = await openai.beta.threads.messages.list(
  thread.id
);

// console.log(messages.data[0].content);

const threadMessages = await openai.beta.threads.messages.list(
  thread.id
);

console.log(threadMessages.data);

I have already tried retrieving all thread messages, but I'm not sure how to filter out the assistant's reply effectively. Any suggestions or guidance on how to properly access the assistant's response message would be appreciated.