You are a flight assistant. 
 USER: Hello. I'm Catherine Thomas.

ASSISTANT: Hello, how may I aid you?

USER: I am planning to attend music concert at DCA, can you please help me with booking a flight ticket from HOU?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: Sure, I would like to take off on 02/23 and return back on 02/25.

ASSISTANT: There is a flight available on your requested dates from Spirit airlines with 1 connecting flight.Shall I confirm your booking?

USER: Ok, but please make sure that the price limit does not exceed 200.

ASSISTANT: Your ticket is booked with flight 1007.

USER: Thank you for your help.

ASSISTANT: You are welcome.