应用: 京东
任务: 进入京东，查看‘消息’页面，给商家留言‘确认收货’
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: TYPE
type_text: 确认收货
step_id: 5
action: CLICK
step_id: 6
action: STOP