on *:text:!leave*:#:{
  if ( $nick isop $chan ) || ( $nick ishop $chan ) {
    msg $chan Leaving $chan $+ , Thank you for having me. If you would line me to rejoin type /invite $me $chan $+ . } { part $chan  
    else { notice $nick You NEED to be Half-Op or higher to make me leave. }
    { halt }
  }