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:       You know , I really don ’ t think Americans are very romantic .  
 Person2:Where did you get that idea ?  
 Person1:        That ’ s the impression I get from the movies , and from looking around . Men and women seem very business-like in their relations with each other .  
 Person2:Well , I ’ m still not sure what you ’ re asking me .  
 Person1:        Is it true or isn ’ t it ?  
 Person2:Do you want to know something about the American character ?  
 Person1:        I just think you ’ re trying to change the subject . But go ahead .  
 Person2:No , this will help answer your question . In American society boys and girls are raised together . They ’ re not segregated in their activities ! Boys and girls go out together from an early age .  
 Person1:        OK , go on .  
 Person2:After being raised together , men and women can be business-like in each other ’ s company . It really doesn ’ t have anything to do with the way a man and woman behave toward each other when they are in love . Does that answer your question ?  
 Person1:        Not exactly , but I see your point .  
 Person2:I think Americans are pretty romantic when they are in a relationship and a lot of flirting goes on in every office . After you ’ Ve been in America for a while , you will probably see what I mean . 

formal