A method for using multi-level bots is discussed. The method includes accessing, via an integration bot, a chat text, provided by a chat application instance, that indicates a user query. The method includes accessing a user state associated with a user of the chat application instance, the user state indicating previous chat texts associated with the chat application instance and corresponding knowledge queries. The method includes generating, based on the user state and analysis of the chat text, a knowledge query for data access using one or more domain bots. The method includes determining, based on the knowledge query, a domain bot and associated communication protocol. The method includes communicating the knowledge query using the communication protocol to the domain bot to obtain a reply. The method includes communicating a response text to the chat application instance, the response text generated based on the reply and the user state.