Some embodiments provide a non-transitory machine-readable medium that stores a program. The program receives a message from a client device. The program further determines a language from a plurality of languages associated with the message. The program also determines a model from a plurality of models that corresponds to the determined language. Based on the determined model, the program further determines a function from a plurality of functions provided by a computing device that is associated with the message. The program also sends the computing device a request to perform the function.