You are a flight assistant. 
 USER: Hello. I am Nicholas Walker.

ASSISTANT: Hello, how can I help you?

USER: I want to cancel my reservation due to bad weather condition. Can you help me in cancellation?

ASSISTANT: Sure, please wait a minute.

USER: Sure.

ASSISTANT: There is no reservation with your name.

USER: Ok, No problem.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your help.