应用: 滴滴出行
任务: 打开滴滴出行，进入‘寄送’选项，点击下单寄送一个包裹
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