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:       I bought it . I got a watch , too . The company that sells this car has a car club .  
 Person2:Where you can buy lots of paraphernalia ?  
 Person1:        Yeah , and meet other drivers of the same car !  
 Person2:Cool !  
 Person1:        I know girls love this kind of car . Look , it's got a sunroof ! Imagine ... a cool , starry night ...  
 Person2:So , you're going to use Sarah's car to go cruising for chicks ?  
 Person1:        No . I borrowed it to go shopping . 

informal