Lastly, I should ensure the response is helpful without enabling copyright infringement. Directing the user to legal options and explaining the reasons behind the guidance will maintain compliance with policies and ethical standards.

Another angle is to mention potential issues users might face when seeking EPUB/PDF files and how to avoid them, like steering clear of piracy websites. Emphasizing the importance of supporting authors by purchasing legitimate copies is essential here.

Additionally, the user might be interested in reviews or summaries of the book. Including where to find critical analyses or user feedback could add value to the post. I need to make sure the information is current and verified to prevent providing outdated or incorrect sources.