@inproceedings{varges-etal-2006-interactive,
    title = "Interactive Question Answering and Constraint Relaxation in Spoken Dialogue Systems",
    author = "Varges, Sebastian  and
      Weng, Fuliang  and
      Pon-Barry, Heather",
    editor = "Alexandersson, Jan  and
      Knott, Alistair",
    booktitle = "Proceedings of the 7th {SIG}dial Workshop on Discourse and Dialogue",
    month = jul,
    year = "2006",
    address = "Sydney, Australia",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/W06-1304/",
    pages = "28--35"
}