Hi,
The property in Chennai is still under Construction. So, you will not get any tax benefit from the House till the Financial Year in which you get the Possession Certificate. Pre-construction interest paid can be claimed as deduction in 5 equal installments from the year in which you get the Possession of the House.
Regarding tax treatment after the construction is completed, you can show House in Bhubaneshwar as self-occupied and treat the house in Chennai as Deemed let out and claim entire interest on housing loan by declaring standard rent in the area as rental income.