You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I serve you today?

USER: I am Jacob Walker. Can you please book a flight ticket in economy class?

ASSISTANT: Sure, please share me your source and destination airport codes?

USER: My airport codes are, DCA to CLT.

ASSISTANT: May I know your planned journey dates?

USER: My journey dates are, start on Dec 23rd and return back on Dec 25th.

ASSISTANT: Please mention your connection limit?

USER: I need  a connection in between journey.

ASSISTANT: Do you have any other requirement?

USER: My depart time should be in the evening.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for waiting, I found a connecting flight 1022 of airline UA, fare is 100, class is economy, flight depart time is 1:00 AM and return flight time is 18:00 PM. Shall I proceed with booking?

USER: Ok, proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for visiting us, have a nice journey.