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:       What a letdown . I wanted to experience some Mafia culture firsthand .  
 Person2:It's worth it just to go and eat what the mafia eat ! The five-dollar tiramisu is a culinary orgasm .  
 Person1:        Such a thing exists ?  
 Person2:Fortunately , yes . You're blushing !  
 Person1:        Am I ? Um ... my face gets red when I walk too fast .  
 Person2:You're embarrassed , aren't you ? You gotta loosen up in Little Italy . The lady at the cafe will kiss you when you meet her ... 

formal