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:     There will be a party in my company ; what shall I wear ? 
 Person2:  Is it formal or informal ? 
 Person1:      I guess it is a formal one because the general director will give a speech there , and most of the staff will take part in . 
 Person2:  In that case , formal suit with a nice tie will be better . 
 Person1:      You are right . What about shoes ? 
 Person2:  The brown leather shoes are OK . 
 Person1:      Thanks a lot . 
 Person2:  Don ’ t mention it . 

1