AACoRN will replace a 10-year-old, DOS-based application that uses a text-based interface to deliver airline travel information to American Airlines reservation agents.

Southwest Airlines Co. is pushing its supplier to fix customer service problems that emerged following a $500 million upgrade of its outdated reservations system.

Until now, AAA’s airline travel service was built on top of the 20-year-old Galileo system that’s still in use by most of the travel industry.