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:       Henry married Rose only after her father's money , didn't he ?  
 Person2:Yeah . But he soon feel regretted for it .  
 Person1:        But he seems to be very happy with Rose .  
 Person2:He is more nice than wise . 

formal