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:     Here's 30 yuan for my ticket .  
 Person2:  Keep it . I'm buying tonight .  
 Person1:      No , you can't do that .  
 Person2:  Sure I can , my treat . 

0