You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you now?

USER: I am Patrick Brown. I need to cancel my reservation due to some issues, can you cancel it please?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

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

USER: That's ok, no problem. Thank you for your help.

ASSISTANT: Thank you for approaching us, have a nice day.