yùyuē shí tíqián shuō dàole lóuxià liánxì wǒ néng jiǎnshǎo shīfu zài ménkǒu zhǎorén de shíjiān

预约时提前说“到了楼下联系我”，能减少师傅在门口找人的时间。

Saying "contact me when you get downstairs" in advance when booking can reduce the time the technician spends looking for you at the door.