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:     Forest Restaurant . What can I do for you ?  
 Person2:  May I make a reservation ?  
 Person1:      Of course . At what time ?  
 Person2:  The four of us will be there at 7:00 this evening .  
 Person1:      OK , sir . We are looking forward to your arrival . 

1