You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I'm Ryan Walker. I am planning to attend music concert at JFK, can you please help me with booking a flight ticket from HOU?

ASSISTANT: Ok. May I know your travelling dates please?

USER: Sure, I would like to take off on 07/12 and return back on 07/14.

ASSISTANT: I am sorry no flights available on your route.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for choosing us.

USER: You are welcome.