trouble (one) for (something)
To request that one gives or passes something. Excuse me, could I trouble you for some spare change? I'm a bit short for my bus fare. Don't be afraid to trouble your team for progress reports—you've got to stay on top of production, after all!
trouble someone for
Politely ask for something, as in May I trouble you for a drink of water? This idiom uses trouble in the sense of "disturb." [Mid-1800s]