How you ask for something if you want maximum chances of your prospective provider's feeling like accommodating you. Be a "schweetheart" and do this every time you request a favor from anyone.
A friend was plowing out the neighbor's driveway across the road from me, so I slogged over and asked him schuper-schweetly if afterwards he would please also do a single quick "sweep-through" of the road-shoulder by my mailbox to remove just enough of the deep snow-drift that the mail-carrier could reach the box (I'd installed an auxiliary extension-mailbox for the winter, so his plow could just pass right underneath the box). He readily agreed, and I thanked him warmly; it sure beat having to pay big bucks for a plow-truck to make a special trip up here and push the snow away from my box just so that I could receive my weekly junk mail!