In that case you're looking for something like this:
Code:
on *:TEXT:!help *:#: {
  if (%cooldown) {
    msg # Please wait $v1 second $+ $iif($v1 > 1,s.,.)
    return
  }
  inc %x
  if (%x == 3) { 
    set -z %cooldown 30
    unset %x
  }
  var %help $rand(1,2)
  var %rdm.users $nick($chan,0)
  var %rdm.choose $rand(1,%rdm.users) 
  var %rdm $nick($chan,%rdm.choose) 
  if %help == 1 { /msg $chan Help %rdm with this }
  if %help == 2 { /msg $chan Help %rdm with that }
}