You are a flight assistant. 
 USER: Hi, myself Ryan Martinez.

ASSISTANT: Hello. How can I assist you?

USER: I want to travel from IAD to CLT, can you please book me a flight ticket?

ASSISTANT: Sure Ryan, can I know the travel dates please?

USER: Sure, I will depart on 08/12 and return back on 08/14.

ASSISTANT: There is a flight with price 100, can I book it?

USER: That's fine, you can proceed for booking the ticket.

ASSISTANT: Your ticket has been booked with flight number 1004.

USER: Thank you very much for your help.

ASSISTANT: Thank you for approaching us.