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:       Hello , Elitherbeth How are you ?  
 Person2:Fine , thanks .  
 Person1:        Are you sure you ’ re alright . You look a bit worry today ? Is anything wrong ?  
 Person2:Well , Yes . There are something wrong actually . Perhaps you can give me some advice .  
 Person1:        of course if I can .  
 Person2:Well , Last night when I returned from thetheatre I found I lost my wallet .  
 Person1:        Oh dear . That ’ s terrible . What was in your wallet ?  
 Person2:Well , some money of course , a vise , all my identity cards and some photos .  
 Person1:        Well , If I were you , I would go to the police station straight away and calling .  
 Person2:Yes , I have already done that and they already look for it . I ’ ll leaving soon and I need my vise and identity cards badly .  
 Person1:        Oh dear . What a pity . Are you sure you lost your wallet in theatre ?  
 Person2:Yes , quite sure .  
 Person1:        I think you should put an advertisement in china daily . Things where you lasted .  
 Person2:But that takes too long .  
 Person1:        Wait a minute , My uncle lives in Beijing and he lives very close to theatre . I ’ Ve telephone here and ask him to go to theatre to require it . We ’ d better have breakfast now . and meet him later . 

formal