You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

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

ASSISTANT: Sure, I am here to help you. Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, we did not find any active reservation on your name in our records.

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

ASSISTANT: Thank you for contacting us.