Presentation is a key ingredient. Set the mood with dim lighting. If you don't have a dial switch, turn off the lights and use candles. Play love ballads on low volume. Don't forget to do something about the phone.
Nothing ruins a moment faster than leaving the table to answer a call.
Set your answering machine and turn off the ringer. Of course, how your date proceeds may depend in large part on what you bring to the table. If you're looking to cuddle later, fried fish may not be the move. Ditto for heavy meals. After all, you don't want your companion to fall asleep.