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 you ready to order now , sir ?  
 Person2:  Yes .  
 Person1:      Would you like an appetizer ?  
 Person2:  Yes . I'd like a crab cocktail .  
 Person1:      Would you like some soup first ?  
 Person2:  Very well .  
 Person1:      What kind of soup would you like ?  
 Person2:  I want egg soup .  
 Person1:      Have you decided on anything ?  
 Person2:  I'd like to have some meat .  
 Person1:      How about stewed-fried steamed pork ?  
 Person2:  No , thank you .  
 Person1:      Are you interested in today's special ?  
 Person2:  What is it ?  
 Person1:      Twice cooked spicy pork slices .  
 Person2:  OK . Let me try it .  
 Person1:      Anything else ?  
 Person2:  No , thank you 

1