Hello.
Hello, how can I assist 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 in changing my reservation?
Sure, I will help you with that.
Thank you.
Let me know your name to check your reservation?
Sure, myself Janet Wright.
Ok, please wait a moment.
Sure.
Thank you for waiting. I have checked in reservation list to change your ticket, but could not find any reservation with your name.
It's ok, thank you for your help.
Thank you for choosing us.