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 talked like the Terminator for two months ? Wow , I think you liked that movie even more than I liked ' Titanic . ' Why did you like ' Terminator ' so much ?  
 Person2:Well , ' Terminator ' is a really great action movie , and I like action movies because they're exciting .  
 Person1:        Isn't ' Terminator ' really violent ? I usually don't like gory movies because they gross me out .  
 Person2:It is pretty violent , but since it's just robots fighting one another , it isn't very bloody and so it won't gross you out .  
 Person1:        Hmm ... I don't know . Even though it may not be gory , I think it would still totally freak me out . 

formal