1. A computer-executable method for providing context-based web services to a user, comprising: receiving a sentence as input from a user; determining a sentence structure of the sentence; determining whether there is an entry in a database corresponding to the sentence structure; responsive to determining that there is no entry in the database corresponding to the sentence structure, engaging in a dialogue with the user; extracting one or more parameters of the sentence based on information from the dialogue; obtaining contextual data associated with the user and background information associated with the parameters; determining a set of arguments based on the parameters, the contextual data, and the background information associated with the parameters; and using the set of arguments to interact with web services to perform an action for the user and provide a response to the user.