There was a fairly hyped scheduling assistant which had human intervention to start...
Ah here [1] it is, X.ai.
[1] - https://news.ycombinator.com/item?id=11520681
* Interestingly, searching on Google for “x.ai human” lead me back to the HN discussion as the 4th link! I’m seeing HN discussion surface in organic search results a lot more lately.