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:     How is night life in Beijing ?  
 Person2:  Very interesting !  
 Person1:      What do you suggest then ?  
 Person2:  How about going to dance ? There is a very good nightclub nearby .  
 Person1:      That's a great idea . Let's go ... Oh , the dance hall looks very nice and the music is wonderful .  
 Person2:  I'm glad you like it.The band is called " Four and One " . They are especially good at playing rock and roll .  
 Person1:      That's great ! I love to dance to fast music .  
 Person2:  Then you must be interested in disco dancing , aren't you ?  
 Person1:      Yes , disco dancing is my favorite.It ' s great fun and good exercise as well .  
 Person2:  OK . Let's disco .  
 Person1:      Now the band is playing a slow dance .  
 Person2:  That's a waltz . Would you like to try it ?  
 Person1:      Sorry , I think I'Il sit out the next dance .  
 Person2:  All right . Let me get you something to drink . 

1