Hello.
user
Hello, how may I address you?
assistant
 I made a reservation earlier this week to give a seminar, but my seminar has been postponed due to the client inconvenience. Change the reservation with the name of Elizabeth Williams, as my reservation was done with this name.
user
Sure, please wait a minute.
assistant
Ok, I will wait.
user
There is no reservation found with your name.
assistant
Ok, thank you for your information.
user
Thanks for availing us.
assistant