You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER:  I am Ruth Evans want to cancel  my reservation due to heavy snow storm.

ASSISTANT: Sure, I am happy to help you. Please wait for a while.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found on your given name.

USER:  Thank you for your help.

ASSISTANT: Thanks for choosing us.