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:     Are you free this Saturday evening ?  
 Person2:  Oh , it seems there is nothing that evening .  
 Person1:      Would you like to go to the concert with me ?  
 Person2:  I'd like to , where ?  
 Person1:      At our club .  
 Person2:  When ?  
 Person1:      At 7:30 p . m .  
 Person2:  I'll go in time , thank you .  
 Person1:      I'm so pleased that you can go . 

1