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