@InProceedings{varges-weng-ponbarry:2006:SIGdial,
  author    = {Varges, Sebastian  and  Weng, Fuliang  and  Pon-Barry, Heather},
  title     = {Interactive Question Answering and Constraint Relaxation in Spoken Dialogue Systems},
  booktitle = {Proceedings of the 7th SIGdial Workshop on Discourse and Dialogue},
  month     = {July},
  year      = {2006},
  address   = {Sydney, Australia},
  publisher = {Association for Computational Linguistics},
  pages     = {28--35},
  url       = {http://www.aclweb.org/anthology/W/W06/W06-1304}
}