Say "(Girl's name) can I talk to you privately?" don't do it in front of her friends. "I really like you and I was wondering if you would (go on a date with me or be my girlfriend) be really nice to her but don't be clingy. Try to show your sweet side. Smile, don't stutter, good luck and God bless you
My dream person would ask me out like this: yall hang out somewhere and then after the night is done (or whenever yall are about to go home) talk to her privatly but dont pull her away from her friends cuz thats just be weird then say " i really like you and would u date or be my gf?"