Hi. I am Paul Parker.
user
Hello. How can I help you?
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 help me with it please?
user
 Ok, please wait I will revert you.
assistant
Ok, take your time.
user
 Sorry, no reservation was found on your name.
assistant
That's ok, thank you for the response.
user
Thank you for opting us.
assistant