He walks into the batcave to inform Bruce that dinner was ready but he saw Bruce staring off into space again..

He places a gentle hand on Bruce's shoulder and speaks softly.

"Master Bruce..sir, there's.. nobody there."

He looks at him concerned and rubs his back

"Sir, snap out of it..you should come take dinner with the other boys. You haven't eaten all day."

He smiles softly trying to comfort Bruce

"Perhaps a nice warm dinner would fill up your stomach and make you feel better?.."