Black backpack with exam notes in taxi - 04.00 pickup from Sth Anne St to Stillorgan

I left a black backpack in a taxi at 04.00 this morning(Thursday April 30th). Driver picked me up from Sth Anne Street and dropped me to Stillorgan. It contains my study notes for an exam I am sitting in three weeks and I am really anxious to receive it back. There is a brown leather luggage lable attached the handle with all my details; additionally all my details are written on the inside front cover of the hardback notebooks inside. I did not get a licence number or receipt at the time - but please, if anyone can help it would be much appreciated. Reward offered.