Definition: You are given a conversation between two people. 'Person1:' and 'Person2:' are used to separate their respective dialogues. If the conversation begins with a question, label it '1' otherwise '0'.
Input:  Person1:     excuse me ? How can I get to the nearest branch of the national bank ?  
 Person2:  there ’ s branch on new street . Walk up this street until you get to the first set of traffic lights . Then turn right at the traffic lights .  
 Person1:      how far up the street are the traffic lights ?  
 Person2:  not far . About 150 meters perhaps .  
 Person1:      ok . So I turn right at the traffic lights . Then ?  
 Person2:  then keep walking until you reach the war memorial . It ’ s a big statue of a soldier . You can ’ t miss it .  
 Person1:      ok . Where do I go then ?  
 Person2:  you ’ ll see the national bank near the war memorial . It ’ s a big building and you ’ ll see a big sign on the front of the building .  
 Person1:      got it . Thank you very much . 

1