Составьте ситуацию, используя следующие слова и словосочетания: a book-shop, to look for, be on sale, to be sold out,

My sister has become a young mom recently. So now she has a new stage of her life with some experience in upbringing of her little son. One day she asked me to buy her a new book about little children and advice for them. When I came to a book-shop, first I began to look for it myself. Then a shop-assistant decided to help me. She asked about my wish and said that those book was on sale, but two weeks ago. It was sold out very quickly. Then she recommended me to leave the application for new party. I agreed. During the way home, I saw some interesting magazines in the newspaper stall. There was one nice magazine about newborn children. Of course, I bought it. I was very lucky, because my sister thanked me so much for that. It turned out, she was looking for that magazine long time, before childbirth. I was really happy, I could help her so much.