Systems and methods for receiving a first string from a user in a user session, tracking a first response to the first string from the user in the user session, receiving, after receiving the first string, a second string from the user in the user session, the second string having a character operator difference that is below a threshold number from the first string, tracking a second response to the second string from the user in the user session, associating the first string with the second string in response to the second response comprising a higher number of responses as compared with the first response, removing the association between the first string with the second string in response to the second string being a correction of the first string, and correcting, using the association, user input by replacing a portion of the user input that matches the first string with the second string.