Department of Foreign Affairs and Trade

I am making a Freedom of Information request under the Freedom of Information Act 2014. The Irish Embassy in London recently hosted the UK launch of the book "Running from Office" written by former minister Eoghan Murphy. I would like to know how much this book launch cost the Embassy and Department of Foreign Affairs. I would also like to receive a breakdown of these costs. Included in this breakdown, I would like to know how much was paid to Ryan Tubridy to appear at the event.