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:     Hey , David . Where did you get the sofa ? It's so beautiful . Look at the color , I really love this yellow , so bright ! It must be very expensive .  
 Person2:  Not really . To be honest , it's very cheap . I only spent $ 100 .  
 Person1:      Are you kidding ? $ 100 for this big leather sofa ?  
 Person2:  Yes . I bought it in Johnson thrift store .  
 Person1:      Is it a used one ?  
 Person2:  Yes , it is .  
 Person1:      Oh , I don't think I will buy a used sofa even it looks so attractive . 

1