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:       what's up ? 
 Person2:not much . I'm just trying to hook up to the internet . I'm having a few problems though . 
 Person1:        what's wrong ? 
 Person2:I've got all the cords plugged in , but it appears that I'm offline . 
 Person1:        Are you using dial-up or broadband ? 
 Person2:actually , I've got a wireless connection . 
 Person1:        In that case , you need to turn on your airport . 
 Person2:I hook up to the Internet every day . I can't believe I didn't do that . 
 Person1:        do you like ever chat online ? 
 Person2:No , but I'd like to . Do you have to pay to do instant messaging ? 
 Person1:        Oh , no . You can register for free . Just go to the yahoo website and it will tell you how to do it . 
 Person2:what do you do if people want to talk to you online but you don't want to talk to them ? 
 Person1:        well , you can always block them . When I don't feel like talking to certain people online , that's what I do . 
 Person2:what's your email address ? I'll add you to my contacts list . 
 Person1:        it's aubreyinchina@yahoo.com . 
 Person2:cool . We can meet up in a chat room sometime or just chat online using messenger.thanks for your help . 
 Person1:        don't mention it . 

formal