Facebook recently began limited testing of an online personal assistant 'M' that uses a combination of human workers and software to answer questions and carry out tasks like ordering food or flowers for a friend, Daily Mail reported.<br />"M is a personal digital assistant inside of Messenger that completes tasks and finds information on your behalf.<br />It's powered by artificial intelligence that's trained and supervised by people," a Facebook spokesperson was quoted as saying.<br />Unlike other AI-based services in the market, 'M' can actually complete tasks on your behalf.<br />"It can purchase items, get gifts delivered to your loved ones, book restaurants, travel arrangements, appointments and way more," the spokesperson added.<br />Only a few hundred people are believed to have access to the service.<br />To use 'M', users have to tap a small button at the bottom of the Messenger app to send a note.