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 , I bought this sweater yesterday . But when I got home and tried it on , I found it ’ s too small .  
 Person2:  Do you have the receipt with you ?  
 Person1:      Yes , here you are .  
 Person2:  Thank you . Do you want your money back ?  
 Person1:      No , can I exchange it for a bigger one ?  
 Person2:  I am afraid this is the biggest size we have .  
 Person1:      Oh , that's too bad .  
 Person2:  Maybe you would like to try this one with the willow pattern . The price is the same and it's bigger . 

0