I want to talk to this girl I like for the first time, what do I say?

I was thinking something like hey you're (her name) right? And she says yes and I say my name, then I'm not sure what to say after but at the end should I say something like "I thought you were really pretty and if you want we should go out sometime". Am I doing this right?

I want to talk to this girl I like for the first time, what do I say?
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