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:       Do you have any tissue , Eve ? I've used all mine . 
 Person2:Here . Are you all right ? 
 Person1:        Thanks . I am all right . It's just my nose . It must be an allergy . Do you have any aspirin ? I have a terrible headache . 
 Person2:I don't have an aspirin . Perhaps you should go to a doctor . 
 Person1:        No , no . I am okay . It's the weather . It was warm and sunny this morning and now it's chilly and raining . 
 Person2:Really , John . I still think you should go to a doctor . You've been sneezing ever since you entered the office this morning . Why don't you take this afternoon off ? If you don't want to see a doctor , at least you can go home and have a good rest . 
 Person1:        I can't . I am already behind the schedule . Besides , you know Mr . White . He would think that I was putting him on . 
 Person2:You didn't do anything but sneeze this morning , and you can't do anything this afternoon like this . Gee ! You've got a fever . 
 Person1:        Do I ? Oh , no . 
 Person2:Listen to me . You go home now . I will call my doctor and have him go over . Ok ? 
 Person1:        What about Mr.White ? 
 Person2:I'll handle him . Now go home . I'll call you after work . 
 Person1:        Thanks a lot , Eve . Goodbye . 

formal