instruction:
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'.
question:
 Person1:       We've got a problem ... it looks like we'll need more spotlights on the exhibition booth . The client thinks it's too dark , and they want to add halogen lighting . We've already got 3 sets of track lighting from you guys , do you think you could help us out and throw in some halogens ?  
 Person2:Oh ... Um ... I don't think so . you know the halogen lighting is much more expensive than your track lighting system . Plus I'm going to have to call in some guys to install it for you . That's not going to come cheap .  
 Person1:        But it would only be adding to the existing structure . We're not talking about anything new here ...  
 Person2:It doesn't matter because we will still have to call the electrician out , and they are union labor . It'll cost you a pretty penny ...  
 Person1:        How much do you think it would cost ?  
 Person2:Mumm , I estimate it'll run in the neighborhood of ... $ 500 per light .  
 Person1:        $ 500per light ? ! That's ridiculous ! It can't possibly be that expansive !  
 Person2:It is , I'll tell you why . We'll have to call in the electrician , he's going to charge overtime now because it's already 5PM , and it will probably take him an hour a light . Plus , the halogen lights take more electricity , so your electrical cost is going to be higher as well .  
 Person1:        Can't you give me a break on this ? We've already spent so much money on lighting , I hate to have to blow so much more on halogens .  
 Person2:No , that's the cost , and that's what it's going to cost us . We can't go in the hole with this . I am giving you my best price , so take it , or leave it . 
answer:
informal


question:
 Person1:       What do you base our grades on ? 
 Person2:All of your coursework is important , including everything from attendance and homework to all of your test results for the semester . 
 Person1:        Does the final count the most ? 
 Person2:All of it is important ; please just do your best at all times . 
 Person1:        How do you total our scores ? 
 Person2:The final and mid-term are twenty percent each ; homework , attendance , and quizzes are the rest . 
 Person1:        What if we are out sick ? 
 Person2:Make sure you contact me as I only allow one unexcused absence . 
 Person1:        How can we know if we are doing OK during the year ? 
 Person2:Your grade will not be a surprise ; you will know what you need to work on . 
answer:
formal


question:
 Person1:       Happy Thanksgiving !  
 Person2:You , too .  
 Person1:        Let's have pumpkin pie .  
 Person2:It's my favorite . 
answer:

informal


