A method for processing transcriptions using natural language processing (NLP), the method includes obtaining transcriptions corresponding to an utterance from a user device, where each of the transcriptions is a different speech-to-text conversion of the utterance. The method further includes tagging a first transcription with at least one entity tag and a first transcription-level tag to obtain a first tagged transcription, tagging the second transcription with at least one entity tag and a second transcription-level tag to obtain a second tagged transcription, determining a highest probability transcription-level tag from the first transcription-level tag and second transcription-level tag. The method further includes identifying a subject-matter domain using the highest probability transcription-level tag, retagging the first transcription and the second transcription using entity tags associated with the subject-matter domain to obtain retagged transcriptions, performing, using the retagged transcriptions, an action to obtain a result, and sending the result to the user device.