Hi.
Hello, how can I help 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 with that, can I know your good name to proceed further?
Alexander Turner here.
Thank you. Please be online for a while. I will check your reservation status and get back to you.
Ok.
I am sorry to say you that there is no reservation found under your name in our database.
That's ok, thank you for your help.
Thank you for reaching us.