You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Due to sudden rainfall at my source, I want to cancel my recent reservation.

ASSISTANT: Sure, may I know your name please?

USER: I am Thomas Wright.

ASSISTANT: Wait a moment.

USER: Sure.

ASSISTANT: Sorry, no reservation found in your name to cancel the ticket.

USER: Ok, Thank you.

ASSISTANT: Thank you for opting us.