You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I would like to change my reservation which I have done long back with wrong destination code. Can you please help me about it?

ASSISTANT: Sure, I will help you with the change of reservation. May I know your previous reservation name?

USER: Reservation is done on the name of Nancy Baker.

ASSISTANT: Nancy Baker, there is no reservation found on your name in our records.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for choosing our agency.