 In this work, we extend this approach to the task of dialogue state tracking for goal-oriented dialogues, in which the data naturally exhibits a hierarchical structure over utterances and related annotations .
<fluency>  In this work, we extend this approach to the task of dialogue state tracking for goal-oriented dialogues, in which the data naturally exhibits a hierarchical structure over utterances and related annotations .
 In this work, we extend this approach to the task of dialog state tracking for goal-oriented dialogues, in which the data naturally exhibits a hierarchical structure over utterances and related annotations .