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:       Susan has been down recently . I saw her this morning , she looked terrible !  
 Person2:You have any idea why ?  
 Person1:        She broke up with her boyfriend .  
 Person2:I heard her boyfriend is married .  
 Person1:        She still loves him . That's why she feels upset . Her love is always hard and confusing ...  
 Person2:Then what about you ? How are you getting on with your boyfriend ?  
 Person1:        He sometimes really drives me crazy . 

formal