@inproceedings{walker-etal-1998-learning,
    title = "Learning Optimal Dialogue Strategies: A Case Study of a Spoken Dialogue Agent for Email",
    author = "Walker, Marilyn A.  and
      Fromer, Jeanne C.  and
      Narayanan, Shrikanth",
    booktitle = "{COLING} 1998 Volume 2: The 17th International Conference on Computational Linguistics",
    year = "1998",
    url = "https://aclanthology.org/C98-2214/"
}