You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: Owing to an emergency, my meeting with client got cancelled, so I want you to cancel my recent reservation.

ASSISTANT: Sure, I am here to help you with this. May I know your good name please?

USER: Sure, Elizabeth Walker here.

ASSISTANT: Please wait for a mean while.

USER: Sure.

ASSISTANT: Sorry Walker, there is no reservation found as per your name to cancel it.

USER: Ok, no worries at all. Thank you for your information.

ASSISTANT: You are welcome.