Systems, methods, and computer program products for implementing a dynamic free-text search database. First data is generated for the dynamic free-text search database that represents a first relationship including a first keyword, a first trip, and a first weight value. A plurality of free-text search requests are received, and a second weight value for the first relationship is calculated based on the free-text search requests. The second weight value differs from the first weight value. The first data is transformed into second by inserting the second weight value into the first data such that the first relationship includes the second weight value.