MentalChat16K: A Benchmark Dataset for Conversational Mental Health Assistance. - Jia Xu; Tianyi Wei; Bojian Hou; Patryk Orzechowski; Shu Yang 009; Ruochen Jin; Rachael Paulbeck; Joost B. Wagenaar; George Demiris; Li Shen 001 (CoRR, 2025)