在已有的订单中，打开最新订单

itemsCount=Window("Flight Reservation").Dialog("Open Order").Dialog("Search Results").WinList("Flight No.").GetItemsCount()
item=Window("Flight Reservation").Dialog("Open Order").Dialog("Search Results").WinList("Flight No.").GetItem(itemsCount-1)
Window("Flight Reservation").Dialog("Open Order").Dialog("Search Results").WinList("Flight No.").Select item