I’m going to go out on a limb, and say this appears to be wishful thinking for the moment. I’d never heard of a “dialog act recognition system”. In the whole of forever, variations have only been mentioned 9x times on Google Scholar, see below. More often we hear about automatic or automated dialog act recognition, keeping in mind that dialog may also be spelled dialogue, and that dialog act may also be termed dialog acts (plural). Dialog acts are a sub-set of speech acts, and both are sub-sets of.
Section 2 provides an overview about existing dialogue act
recognition systems and the features they use for classification.
See also my quick and dirty webpage: