You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I'm Patrick Lopez. I am planning to attend music concert at ATL, can you please help me with booking a flight ticket from DCA?

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

USER: Sure, I would like to take off on 12/09 and return back on 12/11.

ASSISTANT: Thanks for your patience. I have found spirit airlines which flies with one connection. Can I book it?

USER: Yes, please proceed with the booking if the price limit does not exceed 5000.

ASSISTANT: Yes, I have confirmed your flight ticket with flight number 1016.

USER: Thank you for your help.

ASSISTANT: Thank you.

USER: You are welcome.