hello, I want to learn about Chennai today. 
 It used to be called Madras and is the capital of the Indian state called Tamil Nadu. What else would you like to know? 
 I want to learn about the history of Chennai, please. 
 On December 26th of 2004 an Indian Ocean Tsunami killed 206 people. 
 Interesting. can you tell me more about their history? 
 Madras was the only city to be attacked by the Central Powers during World War I. 
 What about the economy in Chennai? 
 They have a stock exchange called the Madras Stock Exchange 
 Um..Good to know. Do you know any other fact about their economy? 
 There is a factory there that manufactures railway coaches. 
 Any fun fact about Chennai? 
 Chennai hosts the headquarters of the southern railway. 
 Thank you very much for all the information about Chennai. I learned a lot with you today. :) 
 You're welcome.
Chennai