1. A method, comprising: creating a progressively increasing map of a knowledge state as a function of time based on one or more topics covered during a user session by utilizing one or more processing techniques to process at least one of (i) text input, (ii) audio input and (iii) video input derived from content of the user session; analyzing a knowledge base to determine a response to a user query submitted during the user session; and customizing the response to the user based on (i) the map of the knowledge state and (ii) a collection of one or more items of context information pertaining to the user.