The best suggestion is that!

GUYS, we just need a question to accept or not the macth, just that! When somebody ask u about a friendly macth we need to accept that to play... if somebody doens´t awnser the the macth is accepted if He doens´t have a 2 macthes in a day, the limit is necessary, but if someone wants to play doesn't matter.

Just put a question that both of players should accept to play friendly with 2 limits plays.