Complex sentence: By 2003, iPayables was providing InvoiceWorks ® as a service for American Airlines and American Eagle Airlines and their satisfaction with the InvoiceWorks ® solution prompted them to persuade IATA to use InvoiceWorks ® as an industry wide solution.
Split into simpler sentences: By 2003, iPayables was providing InvoiceWorks ® as a service for American Airlines and American Eagle Airlines. American's satisfaction with the InvoiceWorks ® solution prompted them to persuade IATA to use InvoiceWorks ® as an industry wide solution.