You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How may I assist you?

USER: Owing to an emergency, my business trip got cancelled. So I had a request to you to cancel my existing reservation?

ASSISTANT: Sure, may I know your good name?

USER: Sure, I had a existing reservation with name David Scott.

ASSISTANT: Please wait for a while, I will revert to you with current status.

USER: Sure.

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

USER: Ok, no worries at all. Thanks for your service.

ASSISTANT: Thank you for availing us.