In one or more embodiments described herein, device, computer-implemented methods, and/or computer program products that facilitate enhancing test coverage of dialogue models. According to an embodiment, a system can comprise a processor that executes computer executable components stored in memory. The computer executable components can comprise a conversation processing component that receives and processes a first conversation. The computer executable components can further comprise a node marking component that tags a first node of a node map as an accessed node if the first node was accessed during processing of the first conversation. The computer executable components can further comprise a reporting component that generates a report comprising a list of nodes, wherein the list of nodes comprises one or more second nodes that were not accessed during processing of the first conversation.