You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Owing to an emergency, my business conference got cancelled. So I want you to cancel my existing reservation.

ASSISTANT: Sure, I will help you. May I know your good name please?

USER: Sure, Mark White here.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your given name.

USER: Ok, not an issue. Thank you for your help.

ASSISTANT: Thanks for choosing us.