Even an exceptional salesperson has an imperfect memory.
The salesperson had a confident manner with plenty of personality.
You are being helped by an excellent salesperson who has been working there for twenty-five years.
When the salesperson rings up your purchase, no one tells him he had better forget what shoes he sold you with that suit and not to use that information to advise any future clients.
By contrast, when our veteran salesperson retired, he could have been replaced by a new kid, who would have had to start from scratch. 2.