[usr] I was happy to see my dog returned home [sys] That is great news!  Was he lost? [usr] yea he got out from the backyard [qst] [None] [bhv] I'm in a negative mood, please comfort me.
That has definitely got to be a relief that he is back!  That is the best case scenario.  Hopefully, he never gets away again.  Make sure to check your fence!
I was happy to see my dog returned home