The expectations of a user interacting with such interfaces would be that the interaction is ideally as natural as possible.
users expect that the interface can understand who's talking, recognize signals of human behavior, understand them, coordinate the discussion and address humans in a natural form and at the correct time, as a human would do, facilitating overall collaboration on a common problem (Bohus and Horvitz, 2010;Al Moubayed et al., 2012).