Make them happy, may force come from their inside...

As I told earlier buyer will always listen which he likes not you want to speak about. So here point is tell something which make him listen your point and make him happy after knowing something. The average salesman sometime directly or indirectly forcing the buyer to accept the things or accept to make buy with some influence other than his inner desire to accept. So this time it may be your product will get customer but the sales-person will lose the customer for any future product or sale by his impression. So as simple as a rule, make try to convince with buyer's own acceptance rather than by any force or scripted illustrations.

Serve what they want..

”Serve” them (your Audience) with their menu in demand. Any artist or cook or seller want to give his best and try for the same, but his efforts can get success only and only when his effort meets Audience's expectations. Here point is not about success tricks but to focus on what should do at what amount and to convince the Audience about it. In simple words be oneself in crowd of the Audience and write demand from your marketing campaign.