составить диалоги на тему help buy a new bag на английском

Ребят,у него там 12 ошибок!

hi-hello-how are you?-I am fine thanks and you?-me too-I would like to buy new bag-oh okey , can I help you?-yes, ofcourse -let's go to my favourite shop -okey-what bag you would like to buy?-I want big bag for school-what do you think about this?-I don't want to buy white bag. it will become dirty very soon-okay, and what do you think about these one -it is boring i'd like to buy colourful bag -why don't you buy this one -wow! it's the coolest bag I ever seen! I will buy it! how much is it?-it cost 45 dollars and look at this!it is sale! this bag will cost 25 dollars!-great! I am so happy!