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 , Linda . How have you been ? 
 Person2:Pretty bad . I ’ Ve had a bad cold for three days and still can ’ t get rid of it . 
 Person1:        I ’ m sorry to hear that . Is there anything else I can do ? 
 Person2:No , thanks . 
 Person1:        Well , I hope you ’ ll feel better soon . 
 Person2:Thank you for your concern . 

informal