Hi.
Hello.
Gary Lopez here.
How may I assist 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, I will help you. Please, standby.
Ok.
Thank you for waiting, there is no reservation found on your name to proceed for modification.
That's ok, thank you for your help.
Thank you for reaching us.