You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I want to cancel my reservation due to heavy floods at my destination place, so please help me to cancel.

ASSISTANT: Sure, I am here to help you with that.

USER: Ok.

ASSISTANT: May I know your name?

USER: Sure, my name is Pamela Smith.

ASSISTANT: Sorry Smith, no reservation found on your name.

USER: That's Ok, thanks for your service.

ASSISTANT: Thank you for reaching us.