My girlfriend and I met in her native country, England, and since I was from Spain, she was interested and we became lovers, however we cannot see each other yet since she is still studying her degree in England and I returned to Spain, but she came on vacation to see me, problem, she doesn't know Spanish

we are buying ice cream and I ask her her favorite flavor and she tells me so I look at the ice cream man and say

"Uno de vainilla porfavor"

I told the ice cream man and he nodded and said to wait a moment and look at my girlfriend