What is today's most advanced AI assistant? • /r/artificial

Hi, I've always been into AI and Future technology and even slightly believe in the singularity. I think the best thing that will happen for the average person in the next 10 years due to AI will be the arrival of personal digital Assistants. Much like Siri or Cortana but with more advanced AI functions build in. The ability to learn their "clients?" I know we are a long way off from being able to have a program that can make new command libraries without manually going in and creating them yourself but I don't see why we can't have some sort of chat bot integrated with Cortana and a program similar to how Google decides what ads you see.