You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your good name, Please?

USER: Myself George Campbell.

ASSISTANT: How can I help you for the day?

USER: I have planned to go for Deteoritte but I have changed plan so can you please change my recent reservation?

ASSISTANT: Sure. We are very sorry to inform you that, There is no reservation found on George Campbell. Thank you, For making an inquiry with us regarding change reservation.

USER: Ok, fine.Thank you for your information.

ASSISTANT: Have a nice day.