Definition: You are given a conversation between two people. 'Person1:' and 'Person2:' are used to separate their respective dialogues. You are required to assign a label 'formal' if there is an absence of emotion and a presence of questions anywhere within the conversation. If such pattern is not found assign the label 'informal'.
Input:  Person1:       Every country should face the history .  
 Person2:Yeah , we don ’ t live in the vacuum . We have traditional values and long but different history .  
 Person1:        Sometimes , we , human beings , really had done something wrong , so we should admit it at first .  
 Person2:But there is always somebody who wants to turn his back on the true history .  
 Person1:        I believe such things won ’ t be realized , just daydreaming . 

informal