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:       Are you alright , child ? 
 Person2:Hey , I still know my name . 
 Person1:        What did the nurse say ? 
 Person2:She said I have a fever but nothing major . 
 Person1:        In that case , you should go home and get plenty of rest . 
 Person2:What if this small fever turns into a big fever ? 
 Person1:        Then I'll phone our family physician and make an appointment for you . 

formal