Task: 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'.
Categories: Dialogue Act Recognition
Domains: Dialogue

Positive examples:
input: Person1:      Hey man , you wanna buy some weed ?  
 Person2:Some what ?  
 Person 1:Weed ! You know ? Pot , Ganja , Mary Jane some chronic !  
 Person2: Oh , umm , no thanks . 
 Person1:      I also have blow if you prefer to do a few lines . 
 Person2: No , I am ok , really . 
 Person1:      Come on man ! I even got dope and acid ! Try some ! 
 Person2: Do you really have all of these drugs ? Where do you get them from ? 
 Person1:      I got my connections ! Just tell me what you want and I ’ ll even give you one ounce for free . 
 Person2: Sounds good ! Let ’ s see , I want . 
 Person1:      Yeah ?  
 Person2:I want you to put your hands behind your head ! You are under arrest ! 
output: informal
explanation: Based on the conversation, we can see that there is a presence of exclamation which is not present in a formal discussion. Therefore this is an informal conversation; input: Person1:      The taxi drivers are on strike again . 
 Person2: What for ? 
 Person1:      They want the government to reduce the price of the gasoline . 
 Person1:      It is really a hot potato . 
output: informal
explanation: The phrase hot potato is an informal phrase and is used in such context; input: Person1:      We've managed to reduce our energy consumption in our factory by about 15 per cent in the last two years . 
 Person2: That's excellent . How have you managed that ?  
 Person1:      Mainly because we've invested in a heat recovery system . 
 Person2: What does that mean exactly ?  
 Person1:      Well , we use the exhaust gases from our printing presses to provide energy to heat our dryers .  
 Person2: What other sources of energy do you use ? 
 Person1:      We don't use any fossil fuels . Most of our power comes from hydro-electric plants . We're hoping to use even more energy from alternative sources in the future - perhaps even wind power . 
output: formal
explanation: This sounds like a formal conversation about energy consumption. It neither has any detected emotion nor has a commissive statement.

Negative examples:
input: Person1:      What are your personal weaknesses ?  
 Person2: I ’ m afraid I ’ m a poor talker . I ’ m not comfortable talking with the people whom I have just met for the first time . That is not very good for business , so I have been studying public speaking .  
 Person1:      Are you more of a leader or a follower ?  
 Person2: I don ’ t try to lead people . I ’ d rather cooperate with everybody , and get the job done by working together . 
 Person1:      Do you think you can make yourself easily understood in English ?  
 Person2:Yes , in most circumstances .  
 Person1:      Are you available for travel ?  
 Person2: Yes , I like travelling . I am young , and unmarried . It ’ s no problem for me to travel frequently . 
output: formal
explanation: The context of the conversation appears to be about personal traits which are expressed with a sad tone. Therefore this cannot be classified as a formal conversation. This should be classified as informal; input: Person1:      Hello , this is Mike , Kara . 
 Person2: Mike ! Good to hear from you . How are you ?  
 Person1:      Everything is fine , and how are you ?  
 Person2:Things are going well with me .  
 Person 1:Kara , I had fun the other night at the movies and was wondering if you would like to go out again this Friday . 
 Person2: Mike , I don't think that it's a good idea to go out again . I really need to focus on getting packed and ready to move back home .  
 Person1:      Maybe we could just meet for coffee or something .  
 Person2: I can't really deal with any distractions right now , but I appreciate the nice evening we spent together . 
output: informal
explanation: The conversation does not have any detected emotion. This is a formal meet and greets kind of conversation. Therefore this should be classified as informal. This is formal conversation.