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:       Have you taken your temperature ?  
 Person2:Yes , and it is 37 ° C .  
 Person1:        Well , open your mouth and let me have a look . It is nothing serious . You haven't got a fever . But you should take the medicine and need have more rest recently . When you feel well , you could take more exercises , or play sports like basketball , running , and swimming . And eating healthy food , having more fruits and vegetable and drinking milk are good for your heath .  
 Person2:Yes , I see . Thanks a lot . 

formal