Hello,. I am Brian Parker.
user
Hello, how may I help you today?
assistant
I already have an reservation to attend a meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation. Can you please change my existing reservation?
user
Please give me a moment.
assistant
Sure.
user
There is no reservation found with your given name.
assistant
Ok, no issue. Thank you.
user
Thank you for availing us.
assistant