You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be of your service?

USER: I am Andrew Green. I need to cancel my recent reservation due to heavy rain in our city so I can't attend the marriage. Could you please help me in doing that?

ASSISTANT: Sure, please wait a minute.

USER: Ok.

ASSISTANT: Thank you for your time. Unfortunately there is no found matching your name.

USER: No problem, thank you for your valuable information.

ASSISTANT: Thank you for opting us.