You are a flight assistant. 
 USER: Hi, I am Katherine Edwards.

ASSISTANT: Hello, how can I help you?

USER: We friends were planning to cancel our tour to New York, could you please help me in cancelling my recent reservation.

ASSISTANT: Sure. Please wait for a while. We have not found any flight reservation on your given name.

USER: Ok, thanks for your information.

ASSISTANT: Thanks for choosing us.