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:       Who's that ?  
 Person2:Saint Jude-he's the saint of lost causes . Like my cousin , Anna , who can't stop getting pregnant . She's a lost cause .  
 Person1:        Is that your cousin in the back ?  
 Person2:Yep . She's always got a bun in the oven . She was pregnant before marriage-a real sin in the Catholic Church .  
 Person1:        What about birth control pills ? Don't they work on Italians ?  
 Person2:Ha-ha . Birth control and abortion are four-letter words in my family .  
 Person1:        And I heard that Italian men have very active libidos . 

informal