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.

Teach them and you will Learn...new lesson everytime

Probably it's somewhat different than selling. You have to educate the buyer, by elaborating possibility of fulfilling his requirement. Quality of your product or service is not what you spoke but it's that what the buyer listen. So most innovative and impressive way is to tell something which is related to product or service and the buyer may get benifit out of it. It may the potential or inherent benifits or personality related or social or monetary or some special to individuals which he (buyer) will listen. By this way indirecly you are engaging him with the product or service you offer and hence stepping further to make him your 'Customer' !!