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:       Look ! It's clearing up .  
 Person2:I can see the sun now .  
 Person1:        I like summer as long as it's bright like this .  
 Person2:Anyway , I dislike summer here.There ' s too much rainfall . 

informal