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:     Have we met ?  
 Person2:  I don't think so . Michael .  
 Person1:      Hello , Michael . My name's Shirley . Pleased to meet you .  
 Person2:  Pleased to meet you , too , Shirley . So , what do you do ?  
 Person1:      I work in marketing . I'm a regional marketing manager for an IT company . Normally , I work out of Beijing , but I'm here on business . My friend Judy over there , she lives here and she invited me to this party . And you ? How about you ?  
 Person2:  I live here . I was invited by George-he's the tall guy over there . He looks a bit drunk , actually ... 

1