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 . Is this Ann ?  
 Person2:Yes , it is . Kelly ?  
 Person1:        Yes , it's me .  
 Person2:Do you have a cold ?  
 Person1:        No . Worse than that . I have a flu . I'm in bed with a fever .  
 Person2:Oh , no ! What about your presentation today ?  
 Person1:        I'd like to do it , of course . But I just can't . I'm afraid I'd fall down in the middle of it .  
 Person2:I understand . What should I tell Mr . Morley ?  
 Person1:        Why not just tell him I'm sick ? I'll ring him myself this afternoon .  
 Person2:Alright . Have you been to see a doctor ?  
 Person1:        Not yet . I feel too lousy to go out.Anyway , I have a flu . I know what it is . I don't need a doctor to tell me that .  
 Person2:Do you think you'll be able to come in tomorrow ? Or should I call off your appointments for tomorrow too ?  
 Person1:        I'm not sure yet.Maybe this will all be gone in a day.So it's probably better if you don't call off my appointments . I will call you later this afternoon and tell you what I think .  
 Person2:It's rainy weather today . Maybe it's better if you just stay inside.Make yourself some chicken soup and sleep .  
 Person1:        Yes , that's what I plan to do . Except I won't make the chicken soup.Right now I don't think I could swallow more than a spoonful of it .  
 Person2:That bad , huh ?  
 Person1:        Yeah , I'm very nauseous.It ' s mostly nausea and a fever .  
 Person2:Well , I'll cancel your appointments for today . And I'll tell Mr . Morley .  
 Person1:        Thanks , Ann . Talk to you this afternoon .  
 Person2:Hope you feel better . 

informal