A computer-implemented method, comprising: receiving, by a computing device, audio data for a voice input to the computing device, wherein the voice input corresponds to an unknown stage of a multi-stage voice dialog between the computing device and a user of the computing device; determining an estimate for the unknown stage of the multi-stage voice dialog; providing, to a voice dialog system, (i) the audio data for the voice input to the computing device and (ii) an indication of the estimate for the unknown stage of the multi-stage voice dialog; obtaining, by the computing device and from the voice dialog system, a transcription of the voice input, wherein the transcription was generated by processing the audio data with a model that was biased according to parameters that correspond to a particular prediction for the unknown stage of the multi-stage voice dialog, wherein the voice dialog system is configured to determine the particular prediction for the unknown stage of the multi-stage voice dialog based on (i) the estimate for the unknown stage of the multi-stage voice dialog and (ii) additional information that indicates a context of the voice input; and presenting the transcription of the voice input with the computing device.