We use have you? / is it? / can't she? etc. at the end of a sentence.
These ‘mini-questions’ are question tags.
A positive sentence —> a negative question tag
A negative sentence —> a positive question tag
It's a beautiful day, isn't It?
Salma lives in Mumbai, doesn't she?
You closed the window, didn't you?
Those shoes are nice, aren't they?
Tanmay will be here soon, won't he?
That isn't your car, is it?