Someone

Alias bye {
  set %ltime $asctime
  set %lnick $nick
  set %bnick $1
  set %lrsn $2-
  set %away on  
  .nick %bnick
  amsg 12I am now away 7:: 12Reason: %lrsn 7:: 12Left at: %ltime 7::
  .away Away 7:: 12Reason: %lrsn 7:: 12Left at: %ltime 7::
}

Alias back {
  amsg 12I am now back 7:: 12From: %lrsn 7:: 12Time gone: $duration($calc(($ctime - $ctime(%ltime)))) 7::
  set %away off  
  nick %lnick
  away
}

on *:TEXT:*Wiggity*:#:{
  if (%away == on) {  
    if ($nick == $read(away.txt,w,$nick)) { halt }
    write away.txt $nick   
    notice $nick  12AWAY 7:: 12Reason: %lrsn  12Left at: %ltime 7:: 12One time message to " $+ %lnick $+ " (If important /ms send %lnic/k msg)
  }
}