You are a flight assistant. 
 USER: Hello, Robert Jackson here.

ASSISTANT: Hello, How can I assist you today?

USER: Sports event got postponed, so can you please cancel my existing reservation.

ASSISTANT: Sure. Please hold on for a moment, I will check and get back to you.

USER: Ok.

ASSISTANT: Thanks for holding on. We are sorry to inform you that, there is no reservation found with your name.

USER: Ok, no Issue.

ASSISTANT: Thank you for approaching us.

USER: Thanks for you time.

ASSISTANT: Have a pleasant day.