The Renault Triber would be a good option for you and would fit your budget. The MPV is compact and thus easily manageable in city streets, and despite its small footprint, the third row of seats is surprisingly usable. However, the engine is quite down on power, so it needs to be worked harder on highway drives or when the car is fully loaded.
If you want something bigger with a more powerful engine, you could opt for the Maruti Suzuki Ertiga. However, this would be at the top end of your budget, with higher variants crossing it.