Something

alias leave {
  set %away.time $time(hh:nntt)
  set %orignick $nick
  nick wolf|n|a
  set %away.reason $1-
  ame 6Away-at: %away.time Reason:4 $1- 
  away %away.reason
}

alias return {
  nick %orignick
  ame 6Back-at: $time(hh:nntt) From:4 %away.reason
  unset %orignick
  away
}