5. The computing device of claim 4 , wherein: the estimated emotional state comprises an estimated dominance level of the user request, wherein the estimated dominance level has a predetermined relationship to a baseline dominance level; and to modulate the response comprises to modulate the natural language response to exhibit a dominance level opposite the estimated dominance level of the user request.
4. The computing device of claim 1 , wherein to modulate the natural language response comprises to modulate the natural language response to exhibit an emotional state opposite the estimated emotional state of the user request.