@inproceedings{qu-green-2002-constraint,
    title = "A Constraint-Based Approach for Cooperative Information-Seeking Dialogue",
    author = "Qu, Yan  and
      Green, Nancy",
    editor = "McKeown, Kathleen",
    booktitle = "Proceedings of the International Natural Language Generation Conference",
    month = jul,
    year = "2002",
    address = "Harriman, New York, USA",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/Add-Cong-Liu-Florida-Atlantic-University-author-id/W02-2118/",
    pages = "136--143"
}