Hi.
user
Hello. How can I help 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 in changing my reservation?
user
Sure, I am here to help you with that.
assistant
Thank you.
user
May I know your name please?
assistant
Myself Karen Wilson.
user
Please wait for a while, let me check your previous reservation status.
assistant
Sure.
user
Thank you for waiting Karen Wilson. There is no active reservation found on your name in our database to change.
assistant
It's ok, thank you for your help.
user
Thank you for reaching us, have a great day.
assistant