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:       Why are you asking me about my boyfriend ?  
 Person2:Well , Brad from school asked me out just today .  
 Person1:        Brad Bush ? Good for you !  
 Person2:But I don't know what to do .  
 Person1:        You mean you've never had a boyfriend ?  
 Person2:My mom says no boyfriend until I'm in college .  
 Person1:        Until college ?  
 Person2:Actually , that's what a lot of parents in Taiwan say to their kids . 

informal