Abstract
This article introduces natural language interaction (NLI) systems. NLI systems are systems that allow their users to formulate requests in spoken or written natural language. This article highlights the central concepts of natural language interaction systems. NLI systems refer to applications where users can formulate requests addressed to a computer in natural language. Database querying constitutes the most studied form of NLIs. Database NLIs allow information to be retrieved from an underlying database by typing single-sentence queries. This article draws attention to the basic components of an NLI system and gives an overview of spoken dialogue systems (SDS). Apart from giving information about the several applications where NLIs and SDS are being explored, this article concludes with a discussion of more ambitious forms of natural language interaction that may become possible in the longer term.
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