Abstract: A user may respond to a request of another user by entering text, such as a customer service representative responding to a customer. As the responding user enters text, a completion of the text may be suggested to the responding user so that the responding user may select the completion instead of continuing to enter text. Previous messages between the two users and other information may be used to determine an appropriate completion to the entered text. A topic vector may be determined from previous messages, and a feature vector may be determined from the entered text. The topic vector and the feature vector may be used to identify characters that may follow the entered text.

Abstract: A user may request assistance or information using natural language, such as by speaking or entering a text. A response may be automatically determined to the request of the user be performing semantic processing to understand the request and formulate an appropriate response. A response may be automatically determined, be computing features from the request, using the features to select a node of a graph corresponding to the request, and then causing an action to be performed to provide a response to the user. For example, the action may include providing information to the user, requesting further information from the user, or connecting the user with a customer service representative.