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 do you think of that situation comedies showed every weekend ?  
 Person2:To tell you the truth , I don't think much of them .  
 Person1:        You're becoming a real television watcher .  
 Person2:A lot of people feel the same way . 

formal