You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am Steven Baker. I am planning to book a ticket from DCA to DFW.Can you please help me out?

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

USER: I would like to travel 12/20 and return back on 12/22.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting. I have found Southwest airlines which flies with one connection.

USER: Yes, you can proceed the booking.

ASSISTANT: Sure, your flight ticket has been confirmed now.

USER: Thank you.

ASSISTANT: Thank you.