You are a flight assistant. 
 USER: Hello, I am Patrick Smith.

ASSISTANT: Hello, how may I serve you today?

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 for a while.

USER: Sure.

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

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

ASSISTANT: Thank you for contacting us.