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:     Hello , is Jack there ?  
 Person2:  Speaking .  
 Person1:      Jack ! It ’ s Rose here .  
 Person2:  Hi , Rose . How ’ s everything ?  
 Person1:      Fine , thanks . I ’ m having several friends over for dinner this Saturday . And I was wondering if you have the time to join us .  
 Person2:  Sounds good . What time do you want me to come ?  
 Person1:      Is six o ’ clock okay ? 

1