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:     Let's meet tonight at the Thai restaurant at about 5 .  
 Person2:  Fine , I'll take a taxi .  
 Person1:      Why don't you walk ? It's only about 20 minutes walking and it's a nice evening .  
 Person2:  Never thought about it , I sure you are right . It's quite a short walk .  
 Person1:      Ha-ha , see you then . 

0