Hello.
user
Hello, how may I oblige 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.
user
Sure, we are here to make your work ease.
assistant
Thank you.
user
May I know your name please?
assistant
Sure, you can check my reservation on the name of Brandon Miller.
user
Ok, just a moment.
assistant
Sure.
user
Thank you for waiting, we are sorry to say that no reservation was found on your name in our database.
assistant
No worries, thanks for your help.
user
Thank you for selecting us.
assistant