1. A dialog knowledge acquisition system comprising: a hardware processor and a memory; an input module and an output module controlled by the hardware processor; the memory storing a dialog manager configured to instantiate a persistent interactive personality (PIP), and a dialog graph having a plurality of linked dialog state nodes; the hardware processor configured to execute the dialog manager to: receive a dialog initiation data via the input module; identify a first state node on the dialog graph corresponding to the dialog initiation data; determine a dialog interaction by the PIP based on the dialog initiation data and the first state node; render the dialog interaction via the output module; receive a feedback data corresponding to the dialog interaction via the input module; identify a second state node on the dialog graph based on the dialog initiation data, the dialog interaction, and the feedback data; and utilize the dialog initiation data, the first state node, the dialog interaction, the feedback data, and the second state node to train the dialog graph for subsequent dialog interactions by the PIP.