Retrieve assistance reply

Hi

I am in the process of learning the new assistance API.
Using Postman, I did the following: create a tread → create a message > create a run
all of the requests work. However, I cannot retrieve the assistance response with any API call from the documentation. What am I missing?

curl https://api.openai.com/v1/threads/thread_abc123/messages \ -H "Content-Type: application/json" \ -H "Authorization: Bearer $OPENAI_API_KEY" \ -H "OpenAI-Beta: assistants=v1"

try retrieving list of messages using the thread_id and iterate through the messages and get the ones where "role": "assistant",