You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: This is Nicole Martinez. I want to have a crazy trip with my friends in JFK on 04/19.

ASSISTANT: Could you please provide your source airport code?

USER: Sure, my source is DEN and return back at 04/21. Make sure that there is 1 connection limit.

ASSISTANT: Sorry, there is no flight with 1 connection.

USER: That's ok.

ASSISTANT: Thank you for reaching us.

USER: Welcome.