You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I want to cancel my reservation, as there is a heavy snowfall in New York. Can you help me with this?

ASSISTANT: Sure, I will help you to cancel your reservation . May I know your name to cancel that reservation?

USER: I am Nicholas Robinson.

ASSISTANT: Sorry with your name there is no reservation in our database.

USER: Ok, no problem. Thank you for your time.

ASSISTANT: Thanks for contacting us.