Hello.
user
Hello, how can I help you today?
assistant
Actually I made a earlier reservation to go for a trip with my friends, but heavy work load in office I want to change my reservation.
user
Please wait for a while.
assistant
Ok.
user
Sorry to inform, there is no reservation found with your given name. May I know your name please?
assistant
No problem, Thanks for valuable information. Mary Wilson here.
user
Thank you for availing us.
assistant