In a chat-oriented dialogue system, if the topic of the system's utterance does not attract the interest of the user, it is desirable that the system switches the topic. In this paper, for the system to estimate the appropriate timing of switching the topic, we propose a method for estimating users' desire to continue conversation on current topics. Our proposed method improved the estimation accuracy by 13.7 point from the baseline that constantly estimates that the user has no desire to continue conversation on the current topic.
