“…This continuity forces dialogs to manage extensive and persistent information about the different sessions of the patient. In addition, recent projects have also addressed very important aspects in multimodal human–machine interaction like the social acceptability of verbally assistive systems (Payr, ) or the possibility of including additional capabilities such as memory, cognition, emotion recognition, or learning (Cavazza, De La Cámara, & Turunen, ; Leite et al, ; Young, ), Soprano (Sixsmith et al, ), Humaine (Andre et al, ; Rehrl et al, )).…”