Hi.
Hello, how may I aid you today?
 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.
Ok.
May I know your name for checking previous reservation in our database?
Jerry Edwards here.
Please wait for a moment.
Ok.
Sorry to inform you that, there is no reservation found as per your name in our database.
That's ok, thank you for your help.
Thank you for reaching us with a query.