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:     What ’ s the date today ? 
 Person2:  December the fifteenth . The day after tomorrow is little Tom ’ s birthday . 
 Person1:      Right . What present should we give him this time ? By the way , how old is he ? 
 Person2:  Thirteen today and tomorrow . Fourteen the day after tomorrow . 
 Person1:      How time flies ! He ’ s a big boy now . 
 Person2:  And don ’ t forget Mary , Tom ’ s twin sister . It ’ s her birthday , too . 
 Person1:      OK . Let ’ s invite all their little friends to come and celebrate . 

1