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:       Hoo , I'm getting tired , Jeanine , been a long day . 
 Person2:I'm not quitting yet . You know my favourite slogan , don't you ? 
 Person1:        Yeah , I know . Shop till you drop . 
 Person2:Right ! 
 Person1:        I'm getting a little short on cash . Let's just window shop a little . 
 Person2:Ok . 
 Person1:        Hey , Jeanine , get a load of that . It's beautiful . 
 Person2:Ahahah , and I thought you were tired . 
 Person1:        You know .. I have a weakness for long dresses . 
 Person2:It sure looks special , looks expensive too . 
 Person1:        Sure does . Hey , can I sponge a little cash of you ? 
 Person2:Don't worry , Marian , I've got you covered . 
 Person1:        Thanks , Jeanine , you are a real pal . Let's go in . 

informal