You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am George Martin want to change my reservation due to emergency.

ASSISTANT: Ok, to change your reservation I need to know your name. Thanks for providing your details, please wait for a moment to change the reservation.

USER: Ok.

ASSISTANT: Thanks for waiting, no reservation found with your name to change the reservation.

USER: Thank you.

ASSISTANT: Thanks for approaching us, have a nice day.