You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Gregory Davis, want to cancel my reservation. Can you please help me?

ASSISTANT: Sure, please wait for a while.

USER: Ok.

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

USER: IT's ok, thank you.

ASSISTANT: My pleasure.