text: â¢ use of low level knowledge from the speech recognition phase , â¢ use of high level knowledge about the domain in particular and the dialogue task in general , â¢ a `` continue '' facility and an `` auto-loop '' facility as described by Biermann and Krishnaswamy ( 1976 ) , â¢ a `` conditioning '' facility as described by Fink et al. ( 1985 ) , â¢ implementation of new types of paraphrasing , â¢ checking a larger environment in the expectation acquisition algorithm when deciding if an incoming sentence is the same or similar to one already seen , and â¢ examining inter-speaker dialogue patterns .