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, I am happy help you with that. Can I have your good name to check your reservation status?
assistant
Pamela Green.
user
Ok, please wait a moment.
assistant
Ok, take your time.
user
Sorry to inform you that no reservation has found under your name to change.
assistant
That's ok. Anyways, thank you.
user
Thank you for choosing us, have a good day.
assistant