The flowcharting method called ``service blueprinting'' is a good way to diagram service-process design. This method considers these bidirectionalinteractions with customers (see Kingman-Brundage, 1989; Shostack, 1984; Shostack, 1987). A well-drawn service blueprint will clearly show the impact of customer inputs on customer-received outputs. For this reason, service blueprints tend to not be linear, but two-dimensional: one dimension can show the passage of time and the other can show the visits and re-visits to customer interaction (Sampson, 1999, pp. 418-23).