You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Charles Green. I have made an earlier reservation to attend for a meeting, due to some issues meeting has been cancelled. Can you please aid me with cancellation?

ASSISTANT: Sure, please wait while I look for your current reservation status.

USER: Sure.

ASSISTANT: Sorry, we didn't find any reservation on your name to cancel.

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

ASSISTANT: Thank you.