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:       Is there anything wrong ?  
 Person2:I ’ m worried about my daughter . She can ’ t decide about college .  
 Person1:        Don ’ t worry . That ’ s just a part of being a teenager .  
 Person2:I don ’ t mind that . But she disagrees with me about everything .  
 Person1:        You should encourage her to make up her mind by herself . You shouldn ’ t affect her decision .  
 Person2:But I just want to give her some tips .  
 Person1:        Oh , she can make her own decisions . 

formal