actually i cant move the dining table close to the kitchen as tahst the main entrance to our house.if i put dining table in that area,the entry would look congested.the rooms adjoining it are gallery which leads to mastre bedroom and another bedroom.

He said that with open kitchen i will have less space for storage in kitchen.. i asked him to reshuffle with fridge n sink.. can someone plz tell me the best possible placement of cooking range, fridge n sink in the kitchen...storage tow manage ho jayega

Just because you want to use the space below the stairs, do not just add drawers or shelfs unless you reaalllyyy need it. I would suggest go for adding something green to your house. Its healthy by adding air purifying plants. These plants are nowadays available in most of the nurseries and moreover Green patch in the house gives a beautiful look to the house and is also good for eyes ( the green color). Below are few picture to motivate you for Green patch or Indoor garden.

Make a partition perpendicular to the tv unit wall and u can place the dinning table at that side.attached here is the photo of the same