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:     Hey , what's up ?  
 Person2:  Nothing really .  
 Person1:      I'm throwing a party on Friday .  
 Person2:  I didn't realize that .  
 Person1:      You didn't ?  
 Person2:  Nobody has told me anything about your party .  
 Person1:      Did you want to go ?  
 Person2:  When does it start ?  
 Person1:      At 8  
 Person2:  I'll be there .  
 Person1:      I'd better see you there .  
 Person2:  Of course . 

1