Hi.
user
Hello.
assistant
I am Katherine Harris.
user
How can I assist 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. Can you help me?
user
Sure, please wait a moment.
assistant
Ok.
user
We are sorry to inform you that we did not find any reservation on your given name.
assistant
That's Ok, thanks for your assistance.
user
Thank you for choosing us.
assistant