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:     Room service . Can I help you ?  
 Person2:  Yes , tomorrow is my friend's birthday.Could I arrange a birthday party for him through you ?  
 Person1:      Certainly .  
 Person2:  I want to order a large birthday cake , several kinds of cold dishes , pastries and fruits .  
 Person1:      Any drinks ?  
 Person2:  I've got whiskey and brandy but I need some beer and soda.That ' s all . 

1