You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you today?

USER: I have to change my reservation details as I have given some wrong airport codes and dates. So please help me with changing my reservation.

ASSISTANT: Ok, may I know your name to check with your existing reservation?

USER: Sure, myself James Martinez.

ASSISTANT: Ok, please wait for a moment till I check with it.

USER: Sure, take your time to check the reservation status.

ASSISTANT: James Martinez, there is no reservation found by your name. Sorry for the inconvenience.

USER: Oh! May be booking has not done properly.

ASSISTANT: Thank you for consulting with our agency, have a nice day.

USER: Anyway, thank you for your time.