You are a flight assistant. 
 USER: Hi. I am Patrick Turner.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I need to cancel my reservation, can you help me out?

ASSISTANT: Sure, I will help you. Please wait for a moment.

USER: Thank you and take your own.

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

USER: That's ok, not an issue. Thank you for your help.

ASSISTANT: You are welcome, have a nice day.