If you want existing clients to like you as much as possible and even more so prospective clients then use proper names in conversation. Now there’s PROOF if you need it.
Most probable reasons you may not be using proper names in conversations:
- You are not completely certain you remember (or pronounce) the name right



“Ford & Harrison, a 190-attorney labor and employment firm, has tossed out billable-hour requirements for first-year associates. The program aims to close the practical-skills gap of law school education and increase value to clients. The firm also hopes it will enable associates to handle meatier matters more quickly.“ according to Leigh Jones of The National

Here’s a quote from an article called
The Secret Step: Asking the delegatee for ideas regarding the assigned task. 



Seth Godin’s blog post on