How to make the assistant write the first message?

[simpel]

Hi!

I'd like the assistant to start the conversation, basically just writing the first message. How can I do this so the thread understands it and treats it as the first message in the chat? Of course I can fake the UI so it looks like a message but the thread won't recognize it.

This is basically what I want to achieve:

1. Assistant: Hi, my name is Mr. Assistant. I'm gonna mess up your career
2. User: Nice! What's your name?
3. Assistant: My name is Mr. Assistant

[intoxopox]

Yes, what's the best way to have the LLM start based on the instruction in the system prompt?