You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

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

ASSISTANT: May I know your name please?

USER: Sure, Dennis Miller here.

ASSISTANT: Sorry to say, there is no reservation on your name in our database.

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

ASSISTANT: Thank you for opting us.