If you got to sell something.....firstly you should be in his 
shoes ....understand his mentality....what is he searching 
for....a youth wants looks,music player,wap etc......older one 
wants good battery back up,clear voice.....or something like 
that!
and tone up in the same way.......in other words "you should 
talk in other person's interest"

i want to sell a cell ,first i'll mention cells strikeing 
feature,sound quality,battery-back-up and cheapest price to 
others ,more function than others cell and its weight and 
model size is too attractive and this suitable for you. 
(customer)

keep the client atractive to the product useing 
comunications skill,