Would it be weird to go back and ask for her number?

I went to go eat the other day and I thought the girl working the counter was really cute. We chatted for a bit (she used to live where I am from) but nothing spectacular. I felt like I should've asked for her number but chickened out when I left. would it be weird to go back and ask for her number?
Updates:
+1 y
thank you everyone for the quick replies!
Would it be weird to go back and ask for her number?
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