The seats were all occupied.
A young girl sitting on one of the reserved seats gave up her seat to the man when she finally looked away from her mobile phone.
Before the man could take the seat, a lady standing nearby sat down when she saw the empty seat.
She didn't even realize that the girl who gave up the seat was standing next to her instead of alighting at the next station.
The man then stood at the corner of the door just next to the reserved seat with his back leaning against the glass partition.
When he was reaching his destination, he turned around and told the lady, "Someone has given up her seat to my daughter. But it's ok. I am alighting now."
The lady was taken aback and did not know how to react.
She looked around to see if anyone is staring at her.