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:     Would you please weight this letter for me ?  
 Person2:  Well , it's a bit overweight . You must pay extra for it .  
 Person1:      How much ?  
 Person2:  We demand a surcharge of 80 cents for it . 

0