Abstract: Disclosed are example machine-learning approaches for determining maturity metrics of chatbot users. One or more datasets with words used during past conversations between a chatbot and a set of users with known maturity metrics are generated. A machine learning model is trained by applying machine learning to the one or more datasets such that the machine learning model is trained to output maturity metrics based on words received as inputs. A set of words or phrases spoken or written by the user during a conversation is fed to the machine learning model to determine a maturity metric of the user. A response is identified based on the determined maturity metric, and the response is presented during the conversation with the user. Words and phrases of a user conversing with a chatbot are used to determine the user's age or another maturity metric to generate responses that enhance the user experience.