This is probably my most hated puzzle in the history of gaming! If only those damn sprites stayed static and you could see their name before clicking on them.
Oh well. Not an official hintbook as far as I know, but the Internet is a wonderful thing and good samaritans have provided resources for future players in need. Another user, Lafazar, in another thread took the time to write down what every sprite says, in case you want to solve it applying logic:
https://www.gog.com/forum/dragonsphere/solve_the_sprites_puzzle_by_yourself Or you could do what I did in my desperation and check Universal Hint System. It's not official but provides a series of hints, gradually from vague indications to the solution, for each puzzle. If you keep clicking, it will eventually tell you who you need to speak with:
http://www.uhs-hints.com/uhsweb/hints/dsphere/159.php