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:       Welcome , young man . No offence , but I haven't seen you here before .  
 Person2:Of course , this is my first time here . My Mom has a membership here . Here is the card .  
 Person1:        Okay then . You are the younger customer here ever .  
 Person2:It's not so wise that you do not explore the children's market .  
 Person1:        It's the marketing's fault , I suppose.What do you want to do ?  
 Person2:Well , I want to become just like Bruce Lee . What should I do ?  
 Person1:        That's a long way to go , I'm afraid . First of all , you gotta grow up .  
 Person2:I am still young . And I'm growing every minute .  
 Person1:        Sure . Then what about trying the treadmill or the skipping rope .  
 Person2:I love running . Anything else ?  
 Person1:        Please change your clothes first !  
 Person2:I'm perfect with my clothes . And I do not have anything else with me .  
 Person1:        Sorry , but no jeans here .  
 Person2:Oh , that's the only place where jeans are not popular . I'd better just go home . 

formal