"Ai secretary" in what respect? Natural language processing? Because simply making an entry into a calendar is just a 1980s' level computer programming problem at best, so I think your example needs some clarification/elaboration. Whether something is "AI" also depends on the presence of learning (the stuff you do with Windows voice recognition to set it up is not "learning/teaching" in the AI sense). Most of the things touted as "I" (intelligence) have all the intelligence in the programming effort, but none in the actual program (apart from what was put in).