You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I just want to cancel my recent reservation, due to heavy rainfall at my destination. Can you please help me with that?

ASSISTANT: Sure, please wait for a moment. May I know your good name please?

USER: Sure, you can check the reservation on the name of John Allen.

ASSISTANT: Sorry to say that, no reservation found with your name.

USER: Ok, no problem. Thanks for your assistance.

ASSISTANT: Ok, thanks for choosing us.