Most residents of Dhaka speak Bengali, the national language. Many distinctive Bengali dialects and regional languages such as Dhakaiya Kutti, Chittagonian and Sylheti are also spoken by segments of the population.  English is spoken by a large segment of the population, especially for business purposes. Urdu, including Dhakaiya Urdu, is spoken by members of several non-Bengali communities, including the Biharis.