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:     Are there any seats left for Saturday night ?  
 Person2:  I still have five seats in the mezzanine .  
 Person1:      I suppose there's nothing cheaper , is there ?  
 Person2:  No . Nothing . I'm sorry . 

1