You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Due to heavy rain, I want to cancel my reservation.

ASSISTANT: Sure, we are here to help you. May I know your name please?

USER: Thomas Turner here.

ASSISTANT: Sorry to inform you that there is no active reservation on your given name.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for contacting us.