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:     Good evening , sir . What's your pleasure this evening ? Your usual ? 
 Person2:  Yes . I'm going to stay with the same , a beer . 
 Person1:      Certainly , a beer . Here you are , sir . 
 Person2:  Oh , darn . Look what I've done . ( Spill the drink ) 
 Person1:      Don't worry . I'll make you another on the house . 

1