The Maruti Ertiga fits your requirements well. It offers seven seats and comes with a reasonably efficient 1.5-litre petrol-automatic powertrain. The on road price of the Ertiga in Bhubaneswar ranges from ₹13.13 to ₹15.21 lakh for the petrol automatic variants under 1500cc.
You could also consider the Renault Triber AMT. It is priced lower, with the on road cost in Bhubaneswar ranging from ₹10.00 to ₹10.26 lakh. However, it may not feel as smooth to drive and can seem underpowered on highways, particularly when carrying a full load.

