Around 8 years ago a company called x.ai (yes that was the domain) started to do exactly that. It would create a persona called Amy Ingram (AI in short) that would be your personal assistant. Long story short, it failed miserably as it sent people to the wrong locations on the wrong days. Perhaps it is now the time to finally get it right.
funnily enough I was actually speaking to one of the founders of x.ai recently
I think they paved the way for a lot of the implementation we do today along with the model providers. That being said we are trying to do scheduling a degree greater of complexity.