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:       Just remember . The main thing right now is to make sure Stars.com is happy .  
 Person2:Right . You're right . But she's just evil . Someone should drive a stake through her heart .  
 Person1:        Elvin , please . Can I count on you to keep your cool for a week , or not ?  
 Person2:I'm OK . I'll be fine . I'v cool . I'm cold . I'm like ice . She won't know what hit her .  
 Person1:        By the way , how's the nose ? Boy , that must have hurt . 

formal