How do i pass middleware feedback to user?

[iamlite]

I want to inform the user about the progress or status updates from the middleware directly in the chat UI. For instance, when the middleware is processing, the UI should indicate that something is happening.

Is there anything built in that i can use to achieve that?

I tried doing something like this:

      messages.push({
      role: 'assistant',
      content: [{ type: 'text', text: 'Classifying your message...' }]
    })

this pushes the messages into the API call but does not reflect the added messages in the UI.
Any advice or help would be very much appreciated.

Thanks!