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:       You hoo , anybody here ?  
 Person2:Over here , Betty !  
 Person1:        Hi , Rock Sam ! Hey , I am surprised to see you doing so well .  
 Person2:Haha . Don ’ t worry , Betty . So tell me , what ’ s the latest gossip ? Unless you want to keep it to yourself .  
 Person1:        No way . Alisan Darling just got hitched in Vagas .  
 Person2:No kidding ! What happened to Ad ?  
 Person1:        Darling found out he was having a fling , and one new girl found out about Darling she dumped him too .  
 Person2:Was , talk about a double whammy .  
 Person1:        Ya . And now I can break this to you . Fanny is moving .  
 Person2:Oh , right . What a load off my mind . I really don ’ t like her .  
 Person1:        Well I have to go , Rock Sam . You take it easy , OK .  
 Person2:Thanks for the visit , Betty . 

informal