SEEN NOT SPOKEN TO BEFORE

Met a man waiting for the lift on the ground floor said, 'I was unlucky, I was just about to press the button and up it went.'
'Yeh,' I said, 'it happens then goes all the way to the thirteenth floor.'
'I send it back down again when I get out,' he said, 'I know there's always someone waiting.'
The lift came down.
'You first,' he said and then, 'what floor?' and pressed my button.
He was breathing wheezing said, 'this daily walk kills me. I only go out the back round and down to the bottom but if I didn't do that I'd just sit inside like a vegetable.'
'It's good you make the effort,' I said, warming to this man I'd seen but not spoken to before.
The lift stopped he got out said, 'bye now,' and I saw him walk to his front door.