应用: 滴滴出行
任务: 在滴滴出行里，查看‘订单详情’，下载行程发票
操作步骤:
step_id: 0
action: CLICK
step_id: 1
action: CLICK
step_id: 2
action: CLICK
step_id: 3
action: CLICK
step_id: 4
action: CLICK