Hi. I am Linda Thomas.
user
Hello, how may I aid you today?
assistant
  I already have an reservation to attend at my meeting, due to some problems meeting place has been changed. So I need a few changes in my reservation. Can you help me?
user
Sure, please wait for a moment.
assistant
OK.
user
Thanks for waiting, no reservation found with your name to change.
assistant
No issue. Thank you.
user
Thanks for opting us.
assistant