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:       Are you an art aficionado ?  
 Person2:Not really . I like going to an art exhibition once or twice a year . I hardly know anything about art or sculpture . You are a true art lover , aren ’ t you ?  
 Person1:        I love going to art galleries , particularly when one is holding an exhibition of abstract art .  
 Person2:I never understand the meaning of those painting . They are too abstract for me . I didn ’ t pay much attention in art class at school .  
 Person1:        Art isn ’ t for everyone . I ’ m going to an exhibition tomorrow at the national gallery . It ’ s an exhibition of greek and roman sculpture .  
 Person2:I like sculpture , especially that form ancient rome or Greece . What time are you thinking of going ? I ’ d love to go with you .  
 Person1:        I thought I ’ d have an early lunch and go immediately afterwards . Does that sound ok to you ? Bus 51 goes directly there .  
 Person2:That sounds fine . What time shall we meet at the bus stop ?  
 Person1:        Let ’ s meet at 12:30 . it will probably take us there or four hours to see all of the exhibits . 

informal