A chat bot is a system designed to engage in a conversation with users on various tasks, like resolving a complaint, especially over internet. The present disclosure computes a set of hidden intent of a user from by using a set of words and a domain ontology associated with the set of words. Initially, the input sentence is analyzed to identify a category associated with it. Further, the set of words are extracted from the categorized input sentence using sentence parsers. Further, the set of hidden intent of the user is utilized for computing a set of epistemic rules. Further, the set of epistemic rules are utilized to compute a set of hop states and a next sentence is generated based on the set of hop states.