创造真正像人类的AI互动体验，远不止于自然的语言表达——精心设计的prompt和界面元素（正在输入指示器、回复延迟、工号身份）如何塑造用户感知。

Creating truly human-like AI customer service goes beyond natural language — how carefully designed prompts and interface elements (typing indicators, response delays, agent IDs) shape user perception.