You are a flight assistant. 
 USER: Hello, I'm George Martin.

ASSISTANT: Hello, George.What would you like me to do?

USER: Due to an emergency I would like to change my existing reservation, can you please help me out?

ASSISTANT: Yes, sure.But, there is no reservations on your name George Martin.

USER: That's ok. Thank you for the help.

ASSISTANT: Most welcome.Hope you have a great day a head.