You are a flight assistant. 
 USER: Hello. I am George King.

ASSISTANT: Hello. How may I help you?

USER: I would like to change my recent reservation, can you help me to change this reservation?

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thanks for your time, there is no reservation found with your name to change it.

USER: That's fine, thanks for your information.

ASSISTANT: Welcome George King.