根据以下内容@startuml |用户| start :下单; |系统| if (订单信息正确?) then (是) :生成订单; |仓库| if (有库存?) then (是) :分配库存; |快递员| if (接单?) then (是) :派送; else (否) :取消订单; endif else (否) :取消订单; endif else (否) :提示用户订单信息错误; stop endif |用户| :签收; stop @enduml帮我绘制一份菜鸟驿站系统中派送模块的系统用例图，用plantuml语言规范表示

好的，这是绘制菜鸟驿站系统中派送模块的系统用例图的 PlantUML 代码：

@startuml
left to right direction
skinparam packageStyle rectangle

actor "用户" as user
rectangle "菜鸟驿站系统" {
  usecase "下单" as place_order
  usecase "生成订单" as create_order
  usecase "分配库存" as allocate_inventory
  usecase "派送" as dispatch
  usecase "取消订单" as cancel_order
  usecase "提示用户订单信息错误" as prompt_error
  usecase "签收" as sign

  user --> place_order
  place_order --> create_order
  create_order --> allocate_inventory
  allocate_inventory --> dispatch
  dispatch --> sign
  create_order --> cancel_order
  place_order --> prompt_error
  prompt_error --> cancel_order
}

@enduml

用例图如下所示：