Reminder: the completion models are just that: completion.
If you provide an input that looks like it is done with nothing else to write, it will just continue to return an “end of output” token and be done. That is the case even if it is your question that seems to be finished.
To avoid this, one should prompt the AI with some text where it should continue writing.
User: Hi!
AI: Hello, how can I help.
User: I have a question.
AI: (the AI will continue writing here because you added “AI:” yourself and showed it what to do)