Hi.
Hello, how may I help you?
 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, we are happy to help you. May I know your good name?
Anna Campbell here.
Sorry, there is no active reservation on your name in our records.
That's ok, thank you for your help.
Thank you for availing us.