You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Benjamin Parker here.

ASSISTANT: How may I serve you?

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

ASSISTANT: Please wait for a moment. I will check your flight reservation status and let you know.

USER: Sure.

ASSISTANT: Thanks for waiting. But I am sorry to say that there is no flight reservation on your name to cancel it.

USER: No problem, thank you for checking.

ASSISTANT: Thank you.