在下面对话的空白处，填入适当的句子，使对话意思完整，每空填一句。
提示：李雷到一家商店想买一台电脑。
A: Shop assistant B: Li Lei
A: (1) _________________________?
B: Yes, I want to buy a computer.
A: What kind of computer would you like?
B: (2) _________________________. Because of I have no much money.
A: OK. What are this one? It's cheap.
B: Oh, it looks nice. (3) __________________________?
A: It costs 3988 yuan.
B: OK. (4) ________________________. Here's the money.
A: (5) __________________________. Here's your change (零钱).
B: Good-bye.
A: Bye-bye.