task_categories:automatic-speech-recognition task_categories:text-to-speech task_categories:question-answering annotations_creators:machine-generated multilinguality:monolingual language:en license:apache-2.0 size_categories:1M<n<10M arxiv:2509.09174 region:us speech-to-speech audio-to-audio speech-dialogue dialogue conversational-ai llm multi-turn synthetic-speech single-timbre instruction-following alignment asr wer tts