i am not the first blogger, but my opinion here:
1. A train trip is the sum of a lot of experiences: going from A to B, conversing with fellow passengers, looking out the window at the scenery, getting down at intermediate railway stations, and yes, having dinner/breakfast as well.
2. If you don't have an answer to the question, then you should not just come back and scold the person for asking the question. How about this? Even the train attendant can ask the same question: Do you come here for breakfast?...
more... and then not give any breakfast at all!!! Anyone can say insulting things like that. Railways can give very bad dinner, and if you question, they can say "Do you come here for dinner?" But, then train fare includes breakfast and other charges. So no harm in asking.
3. This is an afternoon/night train. So, I think the first blogger meant 2002/reverse direction from Delhi to BPL.