2005;Karsenty and Botherel 2005;Sturm and Boves 2005), and on the use of error-recovery strategies that are based on analyses of human-human dialogues (Skantze 2005), including the use of facial expressions (Barkhuysen, Krahmer, and Swerts 2005).
as ASR accuracy improves, dialogue systems will be called upon to handle ever more complex tasks and ever less restricted vocabularies.