APPARATUS, METHOD, NON-TRANSITORY COMPUTER-READABLE RECORDING MEDIUM STORING PROGRAM, AND ROBOT

A processor causes a robot to execute any one of a first, second, and third action as an initial action. The initial action is executed for communication with a target person according to a captured image and a captured sound. When a sound is acquired by a microphone after execution of the current action, the processor causes the robot to execute an action one-level higher than the current action. The current action includes the initial action. When the sound is not acquired, the processor determines whether a time elapsed from the execution of the current action is shorter than a threshold. When the time is shorter than the threshold, the processor causes the robot to continue the current action. When the time is equal to or longer than the threshold, the processor causes the robot to execute an action one-level lower than the current action.