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:       Do you know where I can park ?  
 Person2:Do you need a spot here or off campus ?  
 Person1:        I want a space on campus .  
 Person2:There's a parking structure for students .  
 Person1:        Where can I find it ?  
 Person2:Go to the western side of the campus , and you'll find it there .  
 Person1:        Is it full ?  
 Person2:When I went up there , it wasn't full at all .  
 Person1:        When was that ?  
 Person2:Sometime this morning .  
 Person1:        Would it be full now ?  
 Person2:I am really not sure . 

formal