如何用JavaScript高效筛选和合并对话数据，以找到特定问题对应的助理回复？

const chatHistory = [
    {
        "content": "你好",
        "role": "user"
    },
    {
        "role": "assistant",
        "content": "你好！很高兴为你服务。有什么问题或需要帮助吗？请随时告诉我。",
        "flag": "2"
    },
    {
        "role": "assistant",
        "content": "你好，很高兴见到你！我是AI优化助手，有什么可以帮助你的吗？\n\n如果你需要优化你的AI提示词，请告诉我你当前面临的具体问题或需求，我会尽力为你提供帮助。",
        "flag": "3"
    },
    // ...更多对话数据
];

const question = {
    "name": "question",
    "text": "你好"
};

function findAssistantReplies(question, chatHistory) {
  const replies = [];
  let foundQuestion = false;

  for (const chatItem of chatHistory) {
    if (chatItem.role === "user" && chatItem.content.includes(question.text)) {
      foundQuestion = true;
    } else if (chatItem.role === "assistant" && foundQuestion) {
      replies.push(chatItem.content);
    } else if (chatItem.role === "user") {
      foundQuestion = false; // Reset flag when a new user message is encountered
    }
  }

  return replies;
}

const assistantReplies = findAssistantReplies(question, chatHistory);
console.log(assistantReplies);