Hello.
Hello, how may I assist you today?
 I would like to cancel my flight reservation as my trip got postponed, can you please help me?
Sure, can I know your good name please?
I am David Wright.
Ok, please wait for a minute.
Sure, take your own time.
Sorry to say that, there is no active reservation found on your name.
That's ok, thank you for giving information.
Thank you for contacting us.