22. The method of claim 16 , wherein a robot behavior database is provided for mapping a plurality of recognized states of said people which will be detected to a plurality of predetermined robot behaviors, and wherein step (c) comprises the step of determining said behavior of the robot according to one of said predetermined robot behaviors of said database corresponding to a currently recognized state of said people.
16. The method of claim 15 , wherein said scenario memory includes a plurality of entries, each of said entries contains a portion of said scenario to be uttered by one of said partner and said robot, and wherein step (c) comprises the steps of: successively making reference to each of said entries of said scenario memory; producing a predetermined utterance from the robot according to the referenced portion of the scenario; and determining said behavior of said robot according to one of a currently recognized behavior of said partner and a currently recognized state of said people.