You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am Dennis Campbell. I want to cancel my reservation due to heavy rainfall at my place.

ASSISTANT: Ok, I will help you with cancellation. Please wait for a minute.

USER: Sure.

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

USER: Ok, thank you.

ASSISTANT: Thank you for reaching us.