Robots can already do that, they are used at large chains (McDonalds) and they are used all the time.

What they can't do is call the police when the hobo gets too wild, can't fix the inevitable bug in the process(by doing some 4th level menu bypass) and other random stuff that might pop up.

And when the robot can do all that humans are no longer viable as economic entities and will be out competed.

The problem is, the robot has to know what I want it to do without me having to dictate it.

That's the beauty of human interaction, it can't be massively truncated down to just even finger pointing.