@inproceedings{carletta-1990-modelling,
    title = "Modelling Variations in Goal-Directed Dialogue",
    author = "Carletta, Jean",
    booktitle = "{COLING} 1990 Volume 3: Papers presented to the 13th International Conference on Computational Linguistics",
    year = "1990",
    url = "https://aclanthology.org/C90-3061/"
}