Hello, I am Mary Harris.
user
Hello, how could I serve you today?
assistant
Due to some entrepreneurship meeting, I am going to change my existing reservation. Can you please help me in changing the reservation?
user
Please wait for a while.
assistant
Sure.
user
We are sorry to inform you that there is no reservation found with your given name.
assistant
No problem, thank you for the information.
user
Thank you for choosing us.
assistant