You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,. Do you need any assistance ? May I know your name ?

USER: Due to heavy snow-storms my business trip was cancelled. So I want to cancel my recent reservation.

ASSISTANT: Sure.

USER: My name is Jonathan Gonzalez.

ASSISTANT: There is no reservation found.

USER: Ok, Thank you for your service.

ASSISTANT: Thanks.