You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Owning to an emergency, I want to cancel my recent reservation. Can you please help me out?

ASSISTANT: May I know your name?

USER: Sure, my name is Patricia Johnson.

ASSISTANT: Sorry Johnson, No reservation found on your name.

USER: Ok, no problem.

ASSISTANT: Ok.

USER: Thank you.

ASSISTANT: Most welcome.