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:     What's your favourite steps ?  
 Person2:  It's hard to say . But I do love waltz very much .  
 Person1:      How about rumba ?  
 Person2:  To tell the truth , I don't like it .  
 Person1:      Really ? You must like tango , right ?  
 Person2:  Oh , it's really beautiful , but I just can't dance it well .  
 Person1:      Don't be so modest . I'm sure you can dance it very well . Let's dance it now .  
 Person2:  OK . I'll have a try .  
 Person1:      Oh , you dance it so well .  
 Person2:  Thank you for your compliment .  
 Person1:      I think I'm your lucky fellow . 

1