跟售货员对话买东西的英语怎么写，至少10句

---Hello, can I help you?
--I want to buy a sweater for my mum.
--What colour do you like?
--Red, please.
--How about this one?
-Wow, it looks beautiful, can I try on for my mum?
-Sure, the Change Room is over there.
-Thank you. Wow, it's perfect. How much is it?
-108 yuan.
-I will take it, here is my card.
-OK, let me pack your sweat.
-Thanks.

求一段英语对话，关于买东西时候讨价还价的

A:It's so nice.I really like it.
B:I'm glad you like it.
A:Could you give me a discount?
B:Ten percent is the lowest price that I can offer.
A:If you give me a twenty percent discount,I will buy it.
B:I'm sorry,but I really can't.
A:Maybe I will have to go to other shops.
B:OK.