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?
Let me know your name to check your reservation?
Angela Hernandez here.
Ok, please wait for a moment.
Ok.
Thank you for waiting. I have checked in reservation list to change your ticket, but could not find any reservation with your name.
That's ok, thank you for your help.
Thank you for choosing us.