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:       So you said you and Amanda met through a mutual friend . How did it happen ?  
 Person2:Well , my roommate was friends with Amanda , so he introduced us .  
 Person1:        Did he tell you what she was like first ?  
 Person2:Yes , he described her to me , and she sounded like my type . 

informal