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:       That new Sony camcorder you've got is just beautiful .  
 Person2:Yeah.It is the very latest in digital video cameras .  
 Person1:        I can see digital video products are quickly going mainstream with their plunging price .  
 Person2:Getting cheaper is not the only reason for their popularity.They come with a lot of inviting functions .  
 Person1:        Such as ?  
 Person2:They offer clearer and sharper images . Many of them also have up to 20x optical zoom lenses , a photo mode and fast-action mode .  
 Person1:        They are very compact and are designed to be used with one hand .  
 Person2:Right ! Anyway , the basic difference between a digital camcorder and its traditional counterpart is that it speaks digital .  
 Person1:        What does this mean ?  
 Person2:This means digital camcorders can be connected with the digital equipments you have at home , like your digital TV or your computer .  
 Person1:        I can transfer my home video clips from my camcorder to my computer for editing .  
 Person2:Sure ! And without any conversion process or loss of quality ! You quickly find , cut , and record video segments and create slide shows . Some camcorders even offer editing software for adding titles and special effects .  
 Person1:        What special effects ?  
 Person2:Like creating a sepia tone look and some special effects such as fades and dissolves .  
 Person1:        That's great !  
 Person2:With the development of the broad band Internet , you can easily upload your video files to websites or e-mail them to relatives or business partners .  
 Person1:        So everybody's getting video mail . 

informal