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:       well , I finished my last final today .  
 Person2:the end of all the hard work for my master's . what a nice feeling to get my degree !  
 Person1:        do you want to attend the convocation ?  
 Person2:certainly . After years of hard work , I wouldn't miss it . By the way , where can I find cap and gown ?  
 Person1:        do you want to have them made or do you want to rent them ?  
 Person2:oh , I think they're provided by the school for that special day .  
 Person1:        no . those you have to provide for yourself .  
 Person2:what do most of the students do ?  
 Person1:        well , most of them only need a cap and gown for that particular convocation service , but some of the education majors have had them made , because they will be faculty members , and they'll need them f  
 Person2:then , I might as well have them made .  
 Person1:        Mary , don't move . Stand right there . It's a good shot . The background is very pretty .  
 Person2:hold it a second . I want to fix my hairpin .  
 Person1:        it doesn't matter . Say'cheese ' .  
 Person2:here's Lisa . May I take a picture with her ?  
 Person1:        Certainly . Ok , got you . 

informal