His conversation with an older couple caught the attention of another passenger.
Sarah O'Connell – a secondary teacher from Mallow in Cork – was so moved by how decent he was that she tweeted about him and wished him good luck.
She says his openness when asked by the lady about his reasons for being in Dublin led her to make her online comments.
Sarah tweeted Irish Rail about the young man and says the response has been amazing with a large number of people picking up on it.
