It is better to develop a lifestyle that increases your chances to attract the opposite sex than to look for one liners and plan out what to say and do in every situation.
Too many people wonder what the best one liner is or the best approach is given a particular situation. There isn't one and every situation is never same. The idea is not to focus on what to say, but to focus on how you feel. Whatever that comes out of your mouth is not nearly important as how you deliver it.