make up a conversation with a shop assistant in a toy shop

Shop-assistant: What can I do for you? You: I would like to buy something for my little sister.Shop-assistant: Well, how old is she? You: Tomorrow she will be 4.Shop-assistant: Really? What about this pretty doll? You: Oh, no! There are ten or fifteen dolls in our flat. They are everywhere: on the sofa, on the chair, on the computer… Shop-assistant: Sorry, it's awful. Well, what about this drum? You: Oh, no! It's so noisy! Shop-assistant: Let me see. Oh, look! A teddy-bear.You: Never! She has seven or nine taddy-bears.Shop-assistant: Well, I don't know… May be puzzles? You: Yes! Wonderful! Two … No! Three! How much do they cost? Shop-assistant: Three dollars.You: Here you are.Shop-assistant: Well, your change… You: Thank you.Shop-assistant: You are welcome!