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:     May I be of any help ? 
 Person2:  Yes . Show me the sweaters , please . 
 Person1:      What style ? 
 Person2:  Well , could you bring me all the styles of pullovers ? I am not quite sure which one I will buy . 
 Person1:      Ok . Here are the ones , turtleneck pullover , crewneck pullover , V-neck pullover and cowl-neck pullover . 

1