Dialog Simulation with Realistic Variations for Training Goal-Oriented Conversational Systems. - Chien-Wei Lin; Vincent Auvray; Daniel Elkind; Arijit Biswas; Maryam Fazel-Zarandi; Nehal Belgamwar; Shubhra Chandra; Matt Zhao; Angeliki Metallinou; Tagyoung Chung; Charlie Shucheng Zhu; Suranjit Adhikari; et al. (CoRR, 2020)