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:       What do you do in summer ?  
 Person2:I love going out into the countryside for walks or bike ride . I love being out in the fresh summer air . How about you ?  
 Person1:        I don ’ t often go for walks , but I either play sports outside-you know , tennis or badminton-or just sit in the sunshine and read a good book .  
 Person2:What do you do in winter ?  
 Person1:        Well , I play sports indoors quite often . If I ’ m feeling lazy , I just watch a film at home . I prefer summer to winter .  
 Person2:I think most people do . I like wearing nice , colorful clothes in summer-you know , a nice dress or skirt . It ’ s too cold for those kinds of clothes in winter .  
 Person1:        Yes . I like wearing shorts in summer . My legs would freeze !  
 Person2:Do you think we ’ ll have a nice summer this year ?  
 Person1:        Thanks to global warming , it could be hotter than ever ! 

formal