The document discusses generating sales from existing happy customers through customer referrals. It suggests identifying customers who give high satisfaction scores, ensuring their continued happiness, and asking for referrals. Referrals are preferable to seeking new customers because existing customers know the product well and have lower selling costs. The process involves capturing customer data and contact details, calling to understand requirements, and handing qualified leads over to sales counterparts. Customer service executives should be given the responsibility and incentivized to implement this strategy, as they are best positioned to identify happy customers and gain their trust.