You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I just want to cancel my recent reservation, due to heavy rainfall at my source.

ASSISTANT: Ok, may I know your good name please?

USER: Sure, my name is Dorothy Smith.

ASSISTANT: There is no reservation on your name.

USER: Ok, thanks for your help.

ASSISTANT: Thank you.