You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Larry Wilson.

ASSISTANT: How can I help you?

USER: I had planned to go on a vacation, but it was cancelled.Can you cancel my recent reservation?

ASSISTANT: Sure, just a second please.

USER: Sure.

ASSISTANT: I am sorry Mr.Larry Wilson, no reservation found on your name. Thank your reaching us.

USER: Thank you for your help.