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:       I give up ! I simply can't learn French !  
 Person2:Why do you say that ? I think you're making a lot of progress .  
 Person1:        No , I'm not . I try and try and I still can't speak it very well .  
 Person2:Learning any language takes a lot of effort . But don't give up . Why don't we practise those dialogues together ?  
 Person1:        Good idea . That might help . 

informal