You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I am Robert Scott. I want to cancel my recent reservation due to health issues, can you please help me with that?

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

USER: Sure.

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

USER: No problem, thank you.

ASSISTANT: You are welcome, have a nice day.