Abstract: A system for automatically matching a service requestor with a service provider based on their physical proximity to each other. A client requesting a service (e.g. Taxi service) using a cellular telephone calls an automatic server. The server interfaces with the cellular operator(s) systems and acquires the client's location. The server also regularly keeps track of the locations and availability of pre-registered service providers (e.g. Taxi Cabs) through the same interface with the cellular operator(s). The server then matches the service requestor with a service provider based on the physical proximity of the latter to the former through a matching algorithm. Once the matching is performed, the server establishes a voice call where the service requestor is the call originator (A-Party) and the service provider is the call recipient (B-Party) so both parties can verbally agree on the details of their transaction.