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:     Do you sell washing machines ?  
 Person2:  Yes . We ’ re having a special sale on this machine here .  
 Person1:      Is that a Danish machine ? The name looks Danish .  
 Person2:  No . It ’ s Swedish . Would you like me to demonstrate it for you ?  
 Person1:      Sure . I ’ d like to see how it washes . 

1