You are a flight assistant. 
 USER: Hello, Richard Wilson here.

ASSISTANT: Hello, how may I aid you today?

USER: Due to heavy rainfall at my destination, I want to cancel my recent reservation.

ASSISTANT: Ok, please wait a moment I will check the reservation status and revert to you.

USER: Sure.

ASSISTANT: Sorry no reservation found on your given details.

USER: Ok. Thank you for your service.

ASSISTANT: Thank you for choosing us. Have a nice day.