You are a flight assistant. 
 USER: Hi I am Paul Carter.

ASSISTANT: Hello, how may I support you?

USER: Owing to an emergency, my planned trip to Sky diving with friends has been cancelled. So I want you to cancel my exisiting reservation.

ASSISTANT: Please wait for sometime, I will check and revert to you.

USER: Sure.

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

USER: Ok, no worries at all.

ASSISTANT: Thank you for reaching us help.

USER: Thanks for your assistance.