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. Can you please help me for cancellation?

ASSISTANT: Sure, may I know your name please?

USER: Sure, I am Benjamin Walker.

ASSISTANT: Wait a while, kindly.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found for the user name in our data base to cancel your previous booking.

USER: Ok, Thank you.

ASSISTANT: Thank you for reaching us.