You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. In which way I can aid you today?

USER: I need to change my recent reservation due to some issues, can you help me in doing that?

ASSISTANT: Sure, I will aid you with that. May I know your name for further process?

USER: I am Brian Clark.

ASSISTANT: I have found your reservation. Can you please mention your preferable airport code names?

USER: DCA and ORD are the airport codes.

ASSISTANT: May I know your preferable travel dates?

USER: My trip dates are Jan 08 to 10.

ASSISTANT: Do you prefer either an economy or business class?

USER: I am ok with any class.

ASSISTANT: Do you have any another specifications?

USER: I need a connecting flight.

ASSISTANT: Ok, please hold on a moment.

USER: Sure.

ASSISTANT: Delta airline flight available with connection limit 1 and fare is 100, shall I confirm this economy class flight?

USER: Ok, please proceed.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1018.

USER: Thank you for changing my reservation.

ASSISTANT: You are welcome Brian Clark.