You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I best serve you today?

USER: Owing to an emergency, my badminton tournament got cancelled. So I request you to cancel my existing reservation?

ASSISTANT: May I know your good name please?

USER: Sure, I am Paul Johnson.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry to inform, there is no reservation found with your given name.

USER: Ok, no worries at all.

ASSISTANT: Thank you for choosing us help.

USER: Thank you for your support.