Hello.
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
Sure, I am here to help you with that, can I know your good name to proceed further?
assistant
Myself Barbara Miller.
user
 I am very sorry to inform you that there is no reservation found under your name in our database.
assistant
Ok, not an issue. Thank you for checking.
user
Thank you for choosing us.
assistant