11. A vehicle personal assistant embodied in one or more non-transitory machine readable storage media, the vehicle personal assistant executable by a computing system to: monitor a plurality of real-time sensor inputs relating to the vehicle; in a dialog involving natural language speech supplied by a person and natural language output by the vehicle personal assistant, receive a human-generated spoken natural language phrase comprising a plurality of words; execute a semantic interpretation process on the human-generated spoken natural language phrase to derive, from the plurality of words, a vehicle-related trigger condition, a search action, and a search parameter to be used in executing the search action if the trigger condition is met, the trigger condition comprising a data value; store the data value in computer memory; compare a real-time vehicle-related sensor input to the stored data value to determine whether the vehicle-related trigger condition has occurred; and in response to determining that the vehicle-related trigger condition has occurred, execute the search action using (i) a different real-time sensor input than the real-time sensor input used to determine whether the vehicle-related trigger condition has occurred and (ii) the search parameter derived from the human-generated spoken natural language phrase; and present system-generated output resulting from the executing of the search action.
11. A vehicle personal assistant embodied in one or more non-transitory machine readable storage media, the vehicle personal assistant executable by a computing system to: monitor a plurality of real-time sensor inputs relating to the vehicle; in a dialog involving natural language speech supplied by a person and natural language output by the vehicle personal assistant, receive a human-generated spoken natural language phrase comprising a plurality of words; execute a semantic interpretation process on the human-generated spoken natural language phrase to derive, from the plurality of words, a vehicle-related trigger condition, a search action, and a search parameter to be used in executing the search action if the trigger condition is met, the trigger condition comprising a data value; store the data value in computer memory; compare a real-time vehicle-related sensor input to the stored data value to determine whether the vehicle-related trigger condition has occurred; and in response to determining that the vehicle-related trigger condition has occurred, execute the search action using (i) a different real-time sensor input than the real-time sensor input used to determine whether the vehicle-related trigger condition has occurred and (ii) the search parameter derived from the human-generated spoken natural language phrase; and present system-generated output resulting from the executing of the search action. 19. The vehicle personal assistant of claim 11 , executable by the computing system to receive human-generated input in response to the system-generated output and present further system-generated output relating to the conversation in response to the human-generated input.