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:     Is there anything I can do for you ?  
 Person2:  Yes , I'd like to buy a color TV .  
 Person1:      We carry products from three large manufacturers and some imported ones , too . Do you have a specific model in mind ?  
 Person2:  No . Which one do you recommend ?  
 Person1:      This one from Sony gives a very sharp picture .  
 Person2:  Thank you , but I'd prefer to buy a China-made set .  
 Person1:      Which brand do you prefer ?  
 Person2:  Sky worth .  
 Person1:      OK . Come with me , please . 

1