Effective customer support requires not only accurate problem-solving but also structured and empathetic communication aligned with professional standards. However, existing dialogue datasets often lack strategic guidance, and realworld service data is difficult to access and annotate. To address this, we introduce the task of Customer Support Conversation (CSC)⦠See the full description on the dataset page: https://huggingface.co/datasets/DianJin/DianJin-CSC-Data.