Clients are all snakes [Quick Transmigration]

Primary 1 (system): Staff who do not meet customer requirements will not get points!Can't make little money!Lin Xiao: Three, the customer is getting more and more mentally ill, can you change it?Snake spirit patient customer: Yes, cutie, as long as I exchange it with you, I can do anything.Note: 2. The author is dead logical, reads the text easily, and refuses ginseng attacks 3. The protagonist's IQ is average, Su in various meanings~~~ [-]. The main subject and attack are all by one person. Search keywords: Protagonist: Lin Xiao┃ Supporting role: System Sansan