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:       Titanic made a hit ! It was so touching .  
 Person2:But I see things rather differently.The heroin is not attractive and her acting is just so-so .  
 Person1:        The heroin may not be attractive . I like the story , though . 

informal