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:     Can I help you ? 
 Person2:  I'd like to buy a new mobile phone please . 
 Person1:      Ok , would you like a phone with camera and MP3 player ? 
 Person2:  Yes please . And I ’ d like to be able to make video calls too . 

1