You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: George Rodriguez here, I want to change my reservation. Can you do this for me?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found with your name in our records.

USER: Not a problem. Anyway, thank you for checking.

ASSISTANT: Most welcome.