@inproceedings{lemon-etal-2003-managing,
    title = "Managing Dialogue Interaction: A Multi-Layered Approach",
    author = "Lemon, Oliver  and
      Cavedon, Lawrence  and
      Kelly, Barbara",
    booktitle = "Proceedings of the Fourth {SIG}dial Workshop of Discourse and Dialogue",
    year = "2003",
    url = "https://preview.aclanthology.org/fix-sig-urls/W03-2114/",
    pages = "168--177"
}