You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I am Kenneth Moore. I am planing to attend Tennis competition in New York JFK. Can you find a flight ticket for me?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Thank you. my planned trip dates are on Feb 02 and Feb 04.

ASSISTANT: Can I know your airport codes too?

USER: Ok, my source code is BOS.

ASSISTANT: Sorry, there are no flights found.

USER: Ok, not an problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.