Text Extracted from the Image:

4. Dialogue bubbles:
- `Welcome! What would you like?`
- `I'd like ... How much ...?`
- `It's/They're ... Would you ...`
-  ...

解：
我们可以结合图中的商品和对应价格，补全符合购物场景的对话如下：
- `Welcome! What would you like?`
- `I'd like a white cap. How much is it?`
- `It's 15 yuan. Would you like a pair of socks too? They're only 10 yuan.`
- `OK, I'll take them. Here is the money.`