Hi. I am William Carter.
user
Hello, how can I help you?
assistant
Can you help me in changing my recent reservation, as my exam is postponed?
user
Sorry to say, there is no reservation on your name in our database.
assistant
That's ok, thank you for checking.
user
Do you want to know anything else?
assistant
No, thank you.
user
Anyway, thank you for opting us.
assistant