Hello, I am George Roberts.
user
Hello, how can I serve you?
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. Can you help me with it?
user
Sure, please wait a while.
assistant
OK.
user
Unfortunately there is no reservation found according to your name.
assistant
No problem, thank you for the information.
user
Thank you for availing us.
assistant