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'.

 Person1:       How do you like waltz ?  
 Person2:It's very nice , I like it very much .  
 Person1:        May I invite you for the first dance ?  
 Person2:My pleasure . But I'm afraid I'm not much of a dancer .  
 Person1:        In fact , I took up dancing quite recently , too .  
 Person2:Oh , really ? But you're doing the tango wonderfully well .  
 Person1:        I'm glad you say so , you dance beautifully too . It's lucky that I got a partner .  
 Person2:Thank you for your compliments . It's just that you are a good leader . Do you like the samba and waltz ?  
 Person1:        Yes . And what dances do you like best ?  
 Person2:Waltz is my favorite . I like it better than any other dances .  
 Person1:        Oh , the music has stopped . Thank you for the dance .  
 Person2:My pleasure . Let's go and have a drink .  
 Person1:        Fine . 
informal

 Person1:       Now I know why I split up with Mike . We found we were simply not good for each other .  
 Person2:In what ways ?  
 Person1:        Well , he is a typical Sagittarius guy , while I am a Cancer . We aren't really compatible  
 Person2:Ha-ha , so you believe in astrology ?  
 Person1:        What's strange about that ! As a person born under the sign of Cancer , I am home-loving and wish for a peaceful family life . But according to astrology , Sagittarius guys are too adventurous and risk-taking.They seldom think of leading a settled and peaceful life .  
 Person2:Is that so ? I'm afraid it is too narrow-minded to judge people using astrology . It's all stereotypes !  
 Person1:        But in my case , the fact matches the theory . Mike is humorous , energetic , always as fresh as a daisy , but probably too ambitious . It frightens me !  
 Person2:But as far as I remember , you two caught on like a house on fire when you first met .  
 Person1:        Exactly . But later on , he cares more about his career than love . Work seems to be the better all , and all for him-so much that he doesn't even grudge sparing a day out with me . 
informal

 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

