Microsoft's digital assistants and chatbots are getting a lot chattier. Microsoft today unveiled the ability for bots to have "session-oriented" back and forth conversations with humans, instead of the single question, single answer format seen in most digital assistants today. Microsoft believes it is the first company to release this technology, known as Full-Duplex Voice Sense, which allows digital assistants and chatbots to talk and listen at the same time. Microsoft said the longest conversation so far under the new technology lasted more than four hours, with 1,600 back and forth turns between human and bot. In addition to the longer conversations, Microsoft's new voice technology doesn't require the user to say the wake word constantly and the bots can predict what humans will say next to keep the discussion moving.