Is this small dialogue grammatically correct? Help ME just 5 lines?

Suzie: Hey, where did you buy that cover?

paul: On Amazon, but i'm not sure.

suzie: Cool. Do you have an iphone, don't you? I'd like a green one for my samsung.

paul: yes i do! You can find one on the web definitely… Anyway, do you want to a movie?

suzie: I have to work tonight.

please, i'm from spain i'm 16 and i'm NOT GOOD in englis help me. Please.
this is for a stupid homework

Third line: "don't you" is wrong and should not be included. These are called "tag questions" and reverse the subject/verb while adding "not." Since Suzie's second sentence is already a question, it should not have a tag question added to it.

Fourth line: After the "Anyway," Paul's question is missing a verb. It probably should say, "… Do you want to go to a movie?"

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