... easily be plugged in to test their usefulness in different dialogue contexts or for new domains.4 Training the Dialogue System4.1 Random strategy generation In its training mode, the dialogue system ... similar to ours, constisting of: generation of (limited) exploratory dialogue data, using a train-ing system; creating an MDP from these data andthe rewards assigned by the training users; off-linepolicy ... automated by natural language dialogue sys-tems, including information seeking functions, as in timetable or banking applications, but also morecomplex areas such as tutoring, health coaching...