Point-to-point traffic has emerged as a widely used communications paradigm for cyber-physical systems and wireless sensor networks in industrial settings. However, existing point-to-point communication protocols often entail substantial overhead to find and maintain reliable routes. In recent research, protocols that rely on the phenomenon of constructive interference have thus emerged. They allow to quickly, efficiently, and reliably flood packets to the entire network. As all nodes in the network need to (re-)broadcast all packets in such protocols by design, substantial energy is consumed by nodes that do not even contribute to the actual point-to-point transmission. We propose a novel point-to-point communication protocol, called RFT, which attempts to discover the most reliable route between a source and a destination. To achieve this objective, RFT selects the minimum number of participating nodes required to ensure reliable communications while allowing all other devices in the network to sleep. During data transmissions, the nodes on the direct route as well as all helper nodes broadcast the data packets and exploit the benefits of constructive interference in order to reduce end-to-end latency. Nodes which are neither part of the direct route nor helpers go to sleep mode, which helps to reduce network energy consumption significantly. Our extensive evaluation in a real sensor network testbed shows that RFT can reduce network energy consumption by up to 82.5% compared to a state-of-the-art approach whilst achieving a similar end-to-end transmission reliability.