帮我编一下英语对话 Kate去Dave的商店想买双鞋,最终以50元的价格买下 6——8句的对话

Dave：Can I help you?
K:Yes please.I would like to buy a pair of shoes.
D:How about these?
k:They are very beautiful.How much are they?
D:50 yuan.
k:ok.I 'll take it.

K:Hello,Dave.I want to buy a pair of shoes.
D:What colour do you like?
K:Blue.
D:What about this pair?
K:They look very nice.Can I try on them?
D:Sure.
K:They fitme very well.How much aer they?
D:60 yuan.
K:Oh.They're so expensive(dear).How about 50 yuan?
D:OK.
怎么样 我答得不错吧