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:       Have you seen any good movies lately ?  
 Person2:It's ages since I went to see a film .  
 Person1:        Why ? You were a real movie buff when you were a student .  
 Person2:But now I would stay at home watching TV . 

informal