Viability of a Simple Dialogue Act Scheme for a Tactical Questioning Dialogue System

User utterances in a spoken dialogue sys- tem for tactical questioning simulation were matched to a set of dialogue acts gen- erated automatically from a representation of facts ashobject, attribute, valuei triples and actions as hcharacter, actioni pairs. The representation currently covers about 50% of user utterances, and we show that a few extensions can increase coverage to 80% or more. This demonstrates the vi- ability of simple schemes for represent- ing question-answering dialogues in im- plemented systems.