A connector has an inner case connected to a circuit board by reflow soldering, an outer case slidable back and forth on the inner case, and a cover covering the surface of a CPU disposed on the outer case. The robotic fixtures are controlled by a computerized control system to move to predetermined positions on the table surface, and tubing holders on the robotic fixtures are controlled to receive portions of a bent length of metal tubing to inspect and assemble the portions of tubing. The airline can determine the number of seats available on the flight, and board the highest bidding passengers until the flight is full.