You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: Dennis Campbell here. I want to cancel my ticket due to snow storm in my place.

ASSISTANT: Sure, I am gleeful to help you to cancel your reservation.

USER: Ok.

ASSISTANT: Please allow me a moment.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name to cancel your reservation.

USER: No problem, thank you.

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