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:     Excuse me , do you have a vacancy ? 
 Person2:  Let me see . Yes , we still have four left . 
 Person1:      Well , I would like to book a single room . 
 Person2:  How long would you stay ? 
 Person1:      5 days . From Feb . 13 to 18 . 

1