It's troublesome to repeat the dialogue here. Be sure to complete all the dialogue options, especially "Do you have any?" After ordering, he would say, "Huh? Even if there is, I will give it to you? ..... "Then you close the conversation and sit tight. The old man will stand up and walk to the stage to put two books. You can pick up the book and turn it over twice to finish the task. Look through the books, then talk to the old man and ask about the whereabouts of a person. Then start the next task again.