--- Give to another user ---
c GIVE <user> <ammount> <reason>\n
s 200 Give OK\n or 402 Poor You\n or 404 Bad User\n
---- Update balance ---
+--- Alter balance ---
c ADD <user> <ammount> <reason>\n
+s 200 Add OK\n or 402 No balance\n or 403 Not Coke\n or 404 Bad User\n
+--- Set balance ---
+c SET <user> <ammount> <reason>\n
s 200 Add OK\n or 403 Not Coke\n or 404 Bad User\n
--- Get Item list ---