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:       Oh you look awful ! What ’ s the matter ? 
 Person2:Oh ! I feel really under the weather . I ’ Ve got a sore throat and a bad cough . 
 Person1:        Oh dear . Maybe you ’ Ve caught a cold . 
 Person2:Yes , I ’ Ve had lots of overtime to do recently and I haven ’ t slept much at all . 
 Person1:        Well then , you should get some rest this weekend and don ’ t go out drinking . 
 Person2:Yes , I think you ’ re right ! 

formal