Short-duration relationships. Most, though not all, service relationships fall into this category. These involve sales clerks, delivery people, gas station attendants, milkmen, barbers, hairdressers, etc. The turnover among these is relatively rapid and little or no shame attaches to the person who terminates such a relationship. Exceptions to the service patterns are professionals such as physicians, lawyers and accountants, with whom relationships are expected to be somewhat more enduring.