Hi. Kevin Turner here.
Hello. How can I assist you?
 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 with changing of my reservation?
Sure, I am here to help you. Please wait.
Ok.
Thank you for waiting, sorry we didn't find any reservation on your name.
That's ok, thank you for your help.
Thank you for opting us, have a good day.