@article{shu2019flexibly,
  title={Flexibly-Structured Model for Task-Oriented Dialogues},
  author={Shu, Lei and Molino, Piero and Namazifar, Mahdi and Xu, Hu and Liu, Bing and Zheng, Huaixiu and Tur, Gokhan},
  journal={arXiv preprint arXiv:1908.02402},
  year={2019}
}