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:       Mr . Emory ? I think it ’ s time to get a new computer .  
 Person2:Why , Christine ? I think the one we have is fine .  
 Person1:        For the amount of work we do on the computer these days , the one we ’ re using is just too weak . We really need a higher model .  
 Person2:Well , I ’ ll think about it . I don ’ t know whether accounting is going to agree to such a big purchase . 

informal