You are a flight assistant. 
 USER: Hello. Myself Patricia Evans.

ASSISTANT: Hello Evans, how may I assist you?

USER: I had a problem in my business.I want to cancel my reservation.

ASSISTANT: Sure, just hold on Patricia Evans.

USER: Ok.

ASSISTANT: Sorry to inform you, there is no reservation found with your name.

USER: Ok, thank you for your information.

ASSISTANT: It's my pleasure.