You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you out?

USER: I want to cancel my ticket as I am sick.

ASSISTANT: Sure, I am here to help you. May I know your good name?

USER: John Garcia here.

ASSISTANT: Sorry, there is no active reservation on your name in our data.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.