You will be given a definition of a task first, then some input of the task.
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'.

 Person1:       Have you heard about the new iPhone ?  
 Person2:yes , I heard it's supposed to come out in June . Are you thinking about getting one ?  
 Person1:        I'd like to . It's a cell phone , camera , PAD and mp3 player all in one .  
 Person2:if I had enough money , I'd buy one , but I don't even have enough to buy one of their shuffle spods .  
 Person1:        how big is a shuffle iPod ?  
 Person2:the first generation iPod shuffle is about the size of a park of gum and the second generation iPod shuffle is about half the size of the first .  
 Person1:        how many gigs of music can it hold ?  
 Person2:I think it's either one or two gigs . I can't remember .  
 Person1:        how much do they cost ?  
 Person2:not much at all . I think it's about 100 dollars .  
 Person1:        you're right , that's not bad at all .  
 Person2:do you have an iPod ? 
 Person1:        I got one for my birthday when they first came out , but after the battery died out , I never brought another one . 
 Person2:why didn't you just buy another battery for it so you could use it ? 
 Person1:        that's one of the problems with having an iPod . Though an iPod might have an above average battery life , once the battery is dead , so is your iPod . 
Output:
formal