Hi.
Hello. How may I assist you for the day?
 I have to do some modification in my previous flight ticket booking that there is a sudden event held at my home town, so I am unable to travel the trip. Can you please help me out in changing my reservation?
Sure, I am here to help you with that. May I know your name please?
Sure, myself Shirley Moore.
Please wait for a moment, let me check your previous reservation status.
Sure.
Thank you for waiting. There is no active reservation found on your name in our database to change.
It's ok, thank you for your help.
Thank you for reaching us, have a great day.