If you need more thickness then take half cup of water and add 2 tea spoons corn starch and mix very well. Now add it to soup and stir and boil again for 2 minutes. DONE
If you do not have tomato puree then make it at home. Just blend tomato with some water in mixer grinder and use it as tomato puree for your extra spiced soup. But if you have time and make proper tomato puree then boil that tomato, peel its skin, deseeded, rest for 5 minutes to reduce its temperature and blend it.