"None of us" is a strong word. I actually prefer scripts to humans. Scripts don't get mad at me if I take a long time to make a decision. Scripts also don't speak in heavy accents I can't understand, or get frustrated if they don't like my accent.
There are downsides of scripts, mainly that they only accept information in "press button X on the keypad", which means waiting for the script to go through all possible options before you can press a button, instead of just telling it what you want. But Google Assistant doesn't have that problem.
And the other downside of scripts is that they're just so much slower than just filling out a form on a web page with the exact information you need, especially with AutoFill on modern browsers. And this is the same problem whether it's a robot going through a script or a human reading a script.
So when it comes to making a reservation – the other side is basically a human reading a script. It's just a slow interface for restaurants that don't want to set up a computerized reservation system like OpenTable. If the restaurant insists on making me slowly talk to a script instead of just using a website, I don't see anything wrong with outsourcing that call to a robot.
I saw another post on HN that talked about how it was decreasing the amount of human contact, but I seriously doubt that relationships or friendships could remotely commonly arise out of a scripted interaction like a reservation either way.