Things like Alexa, Copilot, and Google Assistant already do a lot as virtual assistants. They can send texts, dial calls, create a schedule, etc. Combining them with LLMs in the future would definitely increase their productivity and use. I can see something like Iron Man's Jarvis coming true soon. The personal assistant can be personalized, and will be available to most technology being used. It can be in the phone, can transfer to automobiles, and can also work on the computer. Eventually it can even be in our bodies, once neural implants and tech become safe and advanced enough.