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 wonder if I can ask you a question .  
 Person2:Ask me a question ? What do you want to know ?  
 Person1:        Well ... er ... it is just ... just that I ...  
 Person2:Just what ? Stop beating around the bush . Tell me what you want to know .  
 Person1:        I ... er ... I just want to know if you could lend me a few bucks .  
 Person2:Lend you a few bucks ? No way ! Still remember the money you borrowed me last time ?  
 Person1:        Yeah . But I ... 

formal