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:     Does it look like a good fit ?  
 Person2:  It's definitely your size .  
 Person1:      Yes , it is very nice . I'll take it .  
 Person2:  How do you prefer to pay ?  
 Person1:      Let me use my credit card .  
 Person2:  Now , if you'll just sign here .  
 Person1:      No problem .  
 Person2:  I hope you enjoy your purchase . Good-bye . 

1