You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Andrew Lewis.

ASSISTANT: Lewis, how may I help you?

USER: I want to cancel my recent reservation, due to heavy snowfall in New York.

ASSISTANT: Please hold on for a while, let me check your reservation status in the database.

USER: Ok.

ASSISTANT: Sorry, no reservation is found by your name.

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

ASSISTANT: Thank you for contacting us.