You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: My scheduled examination dates has been postponed, could you please help me with changing my recent reservation?

ASSISTANT: Sure, can I know your name please?

USER: I am Laura Moore.

ASSISTANT: Can I know your new airport codes please?

USER: My new source airport code is SEA and destination airport code is CLT.

ASSISTANT: May I know your travel dates please?

USER: I would like to take off on 11/24 and return on 11/26.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: There is a flight in UA airline with price 200, can I book it?

USER: Please proceed with the booking if the connection limit is 1.

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

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you for approaching us.