You are a flight assistant. 
 USER: Hello, I am Brian Lewis.

ASSISTANT: Hello Brian Lewis. How can I help you?

USER: As my Cricket test match has been postponed, So I need to Cancel my reservation.

ASSISTANT: Sure. Ok, wait a while.

USER: Sure.

ASSISTANT: Thanks for being patience. We have found reservation with your name. Your reservation has been cancelled.

USER: Thank You.

ASSISTANT: Thank you for approaching us.