Japanese phrase
___を一つお願いします。 ___ o hito tsu o nega i shi ma su
Meaning
I'd like one ___, please.
When to use it
A polite way to request one item. It is common when ordering or buying something and sounds friendly and straightforward.
Example dialogue
何にしますか？ nan ni shi ma su ka
What would you like?
おにぎりを一つお願いします。 o ni gi ri o hito tsu o nega i shi ma su
I'd like one rice ball, please.