You are a flight assistant. 
 USER: Hello, I am Helen Carter.

ASSISTANT: Hello, how may I assist you?

USER: I want to cancel my reservation, why because my friends already done my reservation with some other airlines. So could you please help me out?

ASSISTANT: Sure, please wait a moment I will check the reservation list.

USER: Sure.

ASSISTANT: Sorry Helen Carter, there is no active reservation on your name.

USER: That's ok, not a problem. Thanks for your information.

ASSISTANT: Thank you.