A vehicle (e.g., automobile, motorcycle, a bus, a recreational vehicle (RV), a semi-trailer truck, a tractor or other type of farm equipment, a train, a plane, a helicopter, etc.) may include a so-called “head unit” that provides a voice user interface (VUI) by which to enable spoken human interaction with the head unit to respond to requests for permission (e.g., to access user personal data, to enable the usage of third-party services, etc.). For example, responsive to detecting that an action to be performed has not been granted permission, the head unit may produce (e.g., via one or more speakers) an audio prompt requesting the required permission. A user may answer the audio prompt with an audio input in the form of human speech, which the head unit may receive (e.g., via one or more microphones). The head unit may parse the audio input using speech recognition (e.g., a natural language understanding module) to identify a valid input (e.g., grant or deny permission to perform an action, request additional information, etc.) to which the audio input corresponds and, responsive to identifying a valid input, the head unit may perform the action (e.g., granting or denying permission to perform the action, providing additional information, etc.) associated with the valid input. In this way, the head unit may enable the user to control the granting of permissions via the VUI, which may be particularly beneficial in vehicle settings in which the user is operating the vehicle, as the hands-free, eyes-free user experience may reduce distractions to the user while operating the vehicle and thereby promote safety.

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