Помогите по английскому языку составить диалог на тему помочь купить новую сумку

-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
-lets 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 dont want to buy white bag. it will become dirty very soon
-okay, and what do you think about these one
-it is boring id like to buy colourful bag
-why dont you buy this one
-wow! its 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!