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:     Hi , waiting for the bus ? Where are you going ?  
 Person2:  China Hotel .  
 Person1:      Why don't you take a taxi ? It'll get you there much faster .  
 Person2:  Well , I think I'll take the bus this time just for a change . 

1