Hi.
user
Hello. How may I help you?
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
Please share your name to proceed?
assistant
I am Ronald Lopez.
user
There is no active reservation found on your name to amend it.
assistant
That's ok, thank you.
user
Thank you.
assistant