请给我一个以Python字典形式写的新产品发布会的日程安排，时间单位是小时。【日程安排内容】
user
```python
{
    "发布会日程": {
        "08:00-09:00": "签到与接待",
        "09:00-09:30": "开场致辞",
        "09:30-10:30": "产品介绍",
        "10:30-11:00": "茶歇",
        "11:00-12:00": "技术演示",
        "12:00-13:30": "午餐",
        "13:30-14:30": "用户案例分享",
        "14:30-15:30": "互动问答",
        "15:30-16:00": "闭幕致辞"
    }
}
```
assistant