public String outCar(String ticket) {
		if(ticket.equals("")){
			return "请输入你的取车票据号!";
		}
		
		
		if(!contain(new Ticket(ticket))) {
			return "我们这没有停你的车。";
			
		}
		Car car = out(new Ticket(ticket));
		return "OK，车牌是[" + car.getCode() + "]，欢迎下次光临。";
	}