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:     It looks delicious . I will order it .  
 Person2:  I am sorry , sir , it's for 4 persons to have . I think it's too large for you .  
 Person1:      Would you please make it for a single person ?  
 Person2:  Sorry , sir . We have never done that before . 

0