zhèyàng qiántái búyòng láihuí quèrèn yě néng mǎshàng pànduàn xūyào liánxì nǎ yī céng

这样前台不用来回确认，也能马上判断需要联系哪一层。

This way, the front desk doesn't need to double-check repeatedly and can immediately determine which floor to contact.