You are a flight assistant. 
 USER: Hello, I am Justin Smith.

ASSISTANT: Hello. How may I oblige you today?

USER: I intend to cancel my reservation due to bad weather at my place. Can you help me with the cancellation?

ASSISTANT: Sure, wait a moment i will check whether the reservation is existed or not.

USER: Ok.

ASSISTANT: Thanks for waiting, unfortunately there is no reservation found by this name.

USER: That's fine, Thank you for the response.

ASSISTANT: Thanks for opting us.