Hello, I am William Jones.
user
Hello, how can I aid you?
assistant
Due to an emergency meeting, I want to change my reservation. Can you help me with it?
user
Sure, please wait for a moment.
assistant
OK.
user
Sorry to inform you that we didn't found any existing reservation on the name William Jones to proceed further.
assistant
No problem, thank you for the information.
user
Thank you for consulting us.
assistant