You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you now?

USER: I am George Edwards.

ASSISTANT: Ok.

USER: Can you help me to change my reservation to next week?

ASSISTANT: Sure, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: That is fine. Thank you for your help.

ASSISTANT: Thank you for approaching us, have a nice day.