Abstract: A system for serving a shared-ride user, including a non-transitory storage component and a hardware-based processing unit performing module functions. The storage includes a user-input-interface module that receives, from a machine interface, user-input data regarding a user/co-passenger interaction. The storage includes a ride-sharing module determining, based on input data, an identity or account for the co-passenger, and an output module performing an action based on the identity or account. In another aspect, the storage includes a commerce module determining, based on the input data, a service or product indicated in the interaction and the output action is based on the service or product. In another aspect, the storage includes a social-media module accessing a social-media resource to, using the input data, determine an identity or account of the co-passenger, a product or service indicated by the co-passenger or the user in the interaction, or a schedule of the co-passenger.