应用: 飞猪
任务: 打开飞猪，预定08-20日武汉到广州的火车票。
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
step_id: 5
action: STOP