Hello, Gregory Hill here.
user
Hello, how may 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
Ok, please wait for a while.
assistant
Ok.
user
Sorry, there was no reservation found with your given name.
assistant
That's ok, not a issue.
user
Thank you for opting us.
assistant
Thank you for informing.
user