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:       There is something wrong with my girlfriend . 
 Person2:What's the trouble ? 
 Person1:        The department manager is all over her . He says he loves her . 
 Person2:What about your friend ? Did she fall for him ? 
 Person1:        Of course not ! She thinks he's an apple-head . She doesn't like an apple-headed man , you know . 
 Person2:Now you don't have the butterflies in your stomach , do you ? 

formal