What aspects (technologies or jobs) of hotel / business management will become obsolete in the next 15 years due to technological advancements?

Departments that will be affected are:

1.  Booking and Reservations

2.  Finance

3.  Accountings

4.  Laundry and Housekeeping, 

Because of the advent of robotics, automation ('AI") and other upcoming technological advancements in the hospitality and hotel business the large chunk of hotel business management's key department and divisions that will be affected gradually are: Booking and Reservations, Finance, Accounting and Credit, Controllership, Laundry and Housekeeping, Security, Audit and Business Centers.