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:       How often do you use the internet ? 
 Person2:I use it almost every day , but I usually only use it to check my email . I don ’ t often surf the net . You use the internet a lot , don ’ t you ? 
 Person1:        Yes . I use it to find products and components at the lowest price for my company . It can be frustrating when the connection is poor . 
 Person2:So , you ’ re online eight hours a day . 
 Person1:        Yes , I like the job though . Sometimes , I help other people in the office if they ’ re having trouble online . 
 Person2:How useful do you think the internet is as a source of information ? 
 Person1:        I think it ’ s fairly useful , but there are two big problems . First , a lot of the information you find online is false . Second , when you buy something online , you don ’ t see it until you actually get it . 
 Person2:How do you solve the website problems when you ’ re buying something online ? 
 Person1:        What I do is find the website of shops . Then someone from our company visits the shop and buys when they ’ re seen that the products are genuine and suitable . 

formal