Hi. Charles Adams here.
user
Hello, how  may I assist you today?
assistant
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?
user
Sure, please wait I will check the reservation on your name and revert to you.
assistant
Ok.
user
Sorry, there is no reservation found on your name.
assistant
That's ok, thank you for your help.
user
Thank you for reaching us.
assistant