Hello.
user
Hello, how can 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 in changing my reservation?
user
Yes, I am here to help you.
assistant
Thank you.
user
May I know your name please?
assistant
Myself Robert Hill.
user
Ok, please wait a minute I will get  back to you.
assistant
Sure.
user
Thank you for your time, sorry no reservation found on your name.
assistant
It's ok, thank you.
user
Thank you for reaching us, have a nice day.
assistant