Hi.
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 share me your name.
assistant
Carol Evans here.
user
Sorry, there is no active reservation on your name.
assistant
That's ok, thank you for your help.
user
Thank you.
assistant