A network device monitors communications between a server and a client. The network device simulates certain types of required responses to the server to maintain a persistent session between a client and the server when the actual connection may be intermittent. The network device condenses application screens from the server to streamline user interaction between the client and the server. The network device stores required records for a transaction and provides them to a client for offline processing and then synchronizes stored offline transaction data from the client with the server.