Hi, I am Sandra Williams.
user
Hello, how can 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.
user
Sure, I am here to help you. Please wait for a few minutes.
assistant
Sure.
user
Thank you for your time, There was no reservation found on your name.
assistant
No issue, thanks for your quick response.
user
Thank you for choosing us.
assistant