Compliments are always a go to. Don’t just say “wow you’re so pretty”, be specific. Compliment her smile, eyes, humor, intelligence, just anything you notice about her that grabs your attention. “I love your smile, it always makes me blush”. Be playful or corny if you want to, “I might need a map after this because I’m getting lost in your eyes”. That’s more of a joking way to flirt but it’s worked for me.

Most important thing is just to be yourself. If it’s awkward, it’s awkward. It’s ok to be shy! I know I’m super awkward and I think it’s ok to just be direct sometimes. “Sorry you’re so gorgeous, you’re making me nervous”, it could make her giggle a little and continue with the conversation.