Hi.
user
Hello, how can I assist you now?
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, we are glad to help you. May I know your good name?
assistant
I am Pamela Hall.
user
Sorry, there is no active reservation on your name in our records.
assistant
That's ok, thank you.
user
Thank you for choosing us.
assistant