If you want someone to buy you an ice-cream you don’t just walk up to them and say “Hey you buy me an ice-cream”. You would first introduce yourself and strike up a conversation. The aim would be to develop a relationship with points of common interest, you would then introduce the right messages at the right time about how hot it is say, or perhaps invoke a happy childhood memory of having ice-cream and then when you can see his mouth is watering for an ice-cream you mention that the little gelato shop on the corner makes the…