Tell the cashier that the girl (the one you like) was going to help you, and can you talk to her. Then when The Girl comes to the counter, ask her for some BBQ sauce for your fries. Then see if she has a name tag. Tell her your name, like "Hi I'm John. Can you get me some bbq sauce?"
Or tell her the bathroom is dirty. Or, ask her for a bucket of water because your car is on fire. Take her outside, pop the hood, say "Oops, I guess the fire is out. I'm so sorry. Can I make it up to you and buy you dinner sometime?"
(True story, I went through a McD drive through and my engine caught on fire as I was ordering. In addition to my food, I ordered 4 large waters and told the stupid girl my car was on fire but she didn't believe me.)
I have a long time interest in psychology, specializing in relationship dynamics for 30 years.
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