You are a flight assistant. 
 USER: Hello.

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

USER: I am Ryan Scott, want to cancel my recent reservation due to some personal issue. Please help me out with that.

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

USER: Ok.

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

USER: It's ok, thank you for your help.

ASSISTANT: Welcome, have a nice day.