Serendipity Infolabs, the India-based operator of online taxi reservation service TaxiForSure.com, has raised venture capital funding from global venture capital investor Accel Partners and India-based firms Helion Venture Partners and Blume Ventures. TaxiForSure, which caters to business travelers, is currently available in Bangalore and plans to soon expand to Delhi and Mumbai. Financial terms of the transaction were not disclosed.