Can You Use Customers' Names Too Many Times?

When I worked in guest services at The Ritz Carlton, I noticed some employees had a tendency to overuse guests' names. Unfortunately, after a certain point, it worked in reverse. (Especially in conversations under 7 minutes)
Name overkill doesn't just happen in the hotel industry - it's everywhere. Sure, we know people love to hear their names more than any word in the dictionary. But there comes a point where customers are thinking to themselves, "Alright, I got it. You know my name. That's enough!"
Each point on this graph represents a single moment when a customer hears his name in a short (about 7 minute) transaction. Here's how it makes him feel:
A, nada - "They didn't even use my name once. I don't feel valued."
B, once - "Ahhh...the cashier said 'Mr. Lynch.' Man, you gotta love this store."
C, twice - "Whoa! Two times! This salesman has a great memory. Now that's what I call service!"
D, thrice - "Alright (mild chuckle) - I got it. You know my name. Thank you very much."
E, four times - "No, seriously, you don't have to keep using my name. The first two times were enough."
F, five times - "This is ridiculous. And annoying. I no longer believe you are sincere. And now I've become uncomfortable. Please go away."
Next time you walk into a store, hotel or place of business in which you have a short transaction, keep your ears open. Count how many times they say your name. Then you be the judge. Ask yourself: Did they say it too much?