You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: My business trip has been postponed, can you please help me for changing the existing reservation?

ASSISTANT: Sure, can I know your name please?

USER: Sure, my name is James Phillips.

ASSISTANT: I found your reservation, can you please let me know your travel dates?

USER: The travel dates are 09/08 to 09/10.

ASSISTANT: Can I know the airport codes please?

USER: The airport codes are from DC-DCA to AZ-PHX.

ASSISTANT: There is a flight in AA airline with price 100.

USER: Yes, proceed with my booking.

ASSISTANT: Your ticket has been booked with flight number 1001.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us.