1. On a computing system, a method for suggesting voice commands to control user interaction with the computing system, the method comprising: identifying a user identity of a user interacting with the computing system; selecting a voice command from a set of voice commands based on the user identity; identifying a voice-command suggestion corresponding to the voice command wherein voice commands corresponding to voice-command suggestions that have previously been presented to the user are associated with the user identity, and wherein voice-command suggestions that have been previously presented to the user and ignored by the user are omitted from being selected as the voice command for a designated period; and presenting, via a display, a graphical user interface including the voice-command suggestion.