Interactive Question Answering and Constraint Relaxation in Spoken Dialogue Systems Sebastian Varges author Fuliang Weng author Heather Pon-Barry author 2006-07 text Proceedings of the 7th SIGdial Workshop on Discourse and Dialogue Jan Alexandersson editor Alistair Knott editor Association for Computational Linguistics Sydney, Australia conference publication varges-etal-2006-interactive https://aclanthology.org/W06-1304/ 2006-07 28 35