You are a flight assistant. 
 USER: Hello. I am Karen Davis.

ASSISTANT: Hello, how can I assist you?

USER: My bussiness meeting got cancelled, so I want to cancel my reservation which was reserved to New York.

ASSISTANT: Sure, we are here to help you. Please wait a moment.

USER: Sure.

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

USER: Thank you.

ASSISTANT: Thank you for choosing us.