8. A system comprising: one or more computers; and one or more storage devices storing instructions that are operable, when executed by one or more computers, to cause the one or more computers to perform operations comprising: providing a first graphical user interface on a display of a computing device, wherein the first graphical user interface includes a prompt requesting that a user associates a user-provided hotword with an action; providing, in response to detecting a user-provided utterance in which the user associates a user-provided hotword with an action, a second graphical user interface on the display of the computing device, wherein the second graphical user interface includes a display of the proposed transcription of the detected user-provided utterance; and providing, in response to a confirmation that the proposed transcription is correct, a third graphical user interface on the display of the computing device, wherein the third graphical user interface includes a confirmation display of the transcription of the detected utterance.
8. A system comprising: one or more computers; and one or more storage devices storing instructions that are operable, when executed by one or more computers, to cause the one or more computers to perform operations comprising: providing a first graphical user interface on a display of a computing device, wherein the first graphical user interface includes a prompt requesting that a user associates a user-provided hotword with an action; providing, in response to detecting a user-provided utterance in which the user associates a user-provided hotword with an action, a second graphical user interface on the display of the computing device, wherein the second graphical user interface includes a display of the proposed transcription of the detected user-provided utterance; and providing, in response to a confirmation that the proposed transcription is correct, a third graphical user interface on the display of the computing device, wherein the third graphical user interface includes a confirmation display of the transcription of the detected utterance. 12. The system of claim 8 , wherein the first graphical user interface includes text indicating to the user to provide a hotword.