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:       I will never forget Linda . After all , she was my first lover .  
 Person2:I think you ’ ll lay it to rest with the time flying .  
 Person1:        I remember that someone says that it is difficult to forget the people who don ’ t want to forget .  
 Person2:But I think time can change everything . 

informal