You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Anthony Edwards, I have reservation for a vacation, now I want to change my reservation with different destination. Can you help me to change the reservation?

ASSISTANT: Sure, May I know your name to check the existing reservation? Please wait, I will check and let you know.

USER: Sure.

ASSISTANT: Thank you for waiting, We are sorry to inform you that there is noreservation with your name to change it.

USER: Thanks for the information.

ASSISTANT: Thank you for choosing us, Have a nice day ahead.