The Hatters were condemned to a first defeat in five matches with two quick second half goals and Jones shared his frustration with that post-match.
“To concede two straight after half-time is really disappointing considering first-half I didn’t think there was much in the game. I thought we were growing into it, they started quite well but then we managed to get to grips with everything. With a bit more bravery I think we could have caused them more problems.
“We scored a marginal offside goal, no complaints or anything really and then we thought we could get into it second half.
"We knew we would have real game-changers to bring on but we were passive in the first five minutes and concede from a set-play which killed the game and that was really poor because we had done the basics really well.”
On a more positive note, the gaffer said: “The overriding message is I would have taken six points realistically with Bournemouth at home, Reading away and Sheffield United away.”