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:       Oh . It looks like Jack is going to make his annual speech .  
 Person2:Couldn't he wait until we're finished eating ?  
 Person1:        Yeah . I'm still hungry , but I guess it's kind of rude to keep eating while he's talking , huh ?  
 Person2:Can you even hear what he's saying ?  
 Person1:        No . He's so far away I can hardly see him ! Let's keep eating !  
 Person2:Can you turn the lazy Susan for me ? I want some more chicken .  
 Person1:        All that's left is a leg . I gave the head to Tim ! 

formal