There are no such coded ‘effective first moves in dating’. Had there been rules and codes, people would get tired of the stale old conducts and dialogues and there would be no game in dating.
Ones success with being coupled to a person, or for that matter being formally approved as a date, depend as much on the wit and common sense of the one who proposes as on the nature of the proposed.
Generally, however, an offer for giving a lift or a helping hand in distress is a nice way to recommend your own self as an eligible candidate. Paying compliments is a far bolder approach and is usually adopted by the more spirited lot. Compliments work with all kinds of individuals. Be prudent enough to pick up the right cord and you will be triumphant.