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7.4. Conclusion
When a man-machine dialogue system is used, it is often less with the aim
to discuss on an equal footing than to get the machine to carry out a task. An
utterance thus carries a query, an order or a question. These dialogue acts,
which can be indirect or not explicitly indicated by the utterance, must be
correctly identified by the system. It can then determine what type of reaction
to adopt and approach the dialogue as a structured succession of significant
acts. This chapter shows how the dialogue acts are processed and gives
examples of complex acts, on the one hand at the level of language, which is
naturally complex, and on the other hand at the level of interactions between
language and communication gestures.
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