Hello.
Hello, how may I serve you today?
 I would like to cancel my flight reservation as my trip got postponed, can you please help me?
Sure, I am here to help you. May I know your good name please?
I am Anthony Moore.
Please wait for a moment.
Sure.
Sorry Moore, there is no active reservation found on your name to cancel it.
That's ok, thank you for checking.
You are welcome.