Hi, I am Andrew Lewis.
user
Hello, how may I support you today?
assistant
I would like to change my existing reservation as my meeting got postponed. Can you help me with it?
user
Ok, please wait for a moment.
assistant
Sure.
user
Thanks for waiting, no reservation found with your name to change.
assistant
Ok, thank you.
user
Thanks for availing us, have a nice day.
assistant