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:       Good morning , John . Have you finished reading the novel by Dickens borrowed from the library ? 
 Person2:No . I caught a cold two days ago . I only finish reading half of it . 
 Person1:        I'm sorry to hear that . How are you feeling now ? 
 Person2:I'm feeling better today . 
 Person1:        How many days do you plan to finish reading it ? 
 Person2:About more three days , I think . 
 Person1:        OK . After three days , I will come to you for it . 
 Person2:No problem . 

formal