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:       Guess who I saw yesterday ?  
 Person2:Who ?  
 Person1:        My cousin Monk . Have you seen her lately ?  
 Person2:Not for a couple of years . What happened to her ?  
 Person1:        Nothing exactly . She's grown into a very attractive young lady .  
 Person2:Oh , she is .  
 Person1:        You know , her long lovely blond hair and beautiful blue eyes really make her stand out from others .  
 Person2:Not surprising . I bet she's very tall and slim .  
 Person1:        Yean . Around five feet five inches tall . 

formal