Hello, I am Robert Moore.
user
Hello. How may I render you?
assistant
I made a  reservation earlier to attend  my meeting due to some issues that  meeting place has been changed. So I need a few changes in my reservation. Can you please change my reservation?
user
We are rapturous to help you. Please Give me a minute, I will check the reservation list.
assistant
Sure.
user
Thanks for being waiting. It's unfortunate that we didn't found any reservation by this name.
assistant
Ok, no problem. Thanks for your valuable information.
user
Thank you for choosing us.
assistant