Abstract: A system plays audio prompts to a user as part of a voice application. If the user begins to provide input in response to the audio prompt before the audio prompt is finished playing, the volume of the audio prompt is reduced, but the audio prompt continues to play. If the user finishes providing his input and the system is able to interpret the input before the audio prompt finishes, the audio prompt will halt and the system will take further action in accordance with the user's input. If the user finishes providing his input while the audio prompt is still playing, and the system is unable to interpret the input, the volume of the audio prompt will increase back to the original volume level until either the audio prompt finishes playing, or the user again begins to provide input.