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:       Oh , no . It looks like my computer really has caught a virus .  
 Person2:Why ? Did you open an attachment ?  
 Person1:        Yes , something called “ George W . Bush . ” An hour later , all I see are pictures of George W . Bush in women's clothes .  
 Person2:I kind of like it . He looks better that way , doesn't he ? More presidential .  
 Person1:        I preferred the forward with pictures of him side-by-side with monkeys .  
 Person2:Yeah , their expressions were exactly the same ! 

formal