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:       How did you meet your boyfriend , Cindy ? 
 Person2:We were in the same science class last term . 
 Person1:        Who made the first move ? 
 Person2:I did . 
 Person1:        Wow ! 
 Person2:It was no big deal . 
 Person1:        What do your parents think of your dating a boy ? 
 Person2:They're glad that I finally got a boyfriend . 
 Person1:        They're glad ? ! 

informal