Task-oriented dialogue systems have been widely adopted in the industry (e.g., Amazon Alexa, Google Home, Apple Siri, Microsoft Cortana) as a virtual agent to tend to the needs of the users.
to address such variance in the alignment, we turn to probabilistic modeling with latent variables as it has been successfully used in several recent taskoriented dialogue systems (Wen et al., 2017;Zhao et al., 2017Le et al., 2018).