You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER:  I am William Evans want to cancel my reservation due to heavy snow storm. Can you help me in cancelling?

ASSISTANT: Sure, I will help you with cancellation. May I know your good name?

USER: I have already provided.

ASSISTANT: Please wait for a moment, while I check for the reservation.

USER:  Ok.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name in your system data.

USER: Ok, no issues. Thank you for your response.

ASSISTANT: Thank you for reaching us.