Shop assistant: Hello. Can I help you? Boy: Yes, I’d like to ............................ a complaint. I bought a mobile phone here yesterday and it’s ............................. . Here, look. One of the buttons doesn’t............................................. . Shop assistant: Let me see ... Yes, you’re right. Would you like to ...................................... it or would you like us to replace it with another one? Boy: I want to have another one exactly like this. Shop assistant: Sorry, I’m afraid we have sold out. Would you like to take a look at this model? Boy: Yes, it is nice, but it’s quite expensive. Shop assistant: I could give you a .................................... so you’ll pay 10% less. Boy: That sounds good.