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:       Why weren't you at school yesterday ?  
 Person2:I wasn't feeling really well .  
 Person1:        What was wrong with you ?  
 Person2:My stomach was upset .  
 Person1:        Do you feel better now ?  
 Person2:I don't really feel too well yet .  
 Person1:        Do you want anything to make you feel better ?  
 Person2:No , thanks . I already took some medicine .  
 Person1:        I hope you feel better .  
 Person2:Thank you . 

formal