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:       What should we do this Saturday ? 
 Person2:Rocky six is suppose to come out this Friday . 
 Person1:        Yeah , but I don't know if it is going to be any good . 
 Person2:The only reason I want to see it is because I have seen the previous five . 
 Person1:        True . Ok . Let's see it this Saturday . 
 Person2:How about we hook up for lunch at 12:00 , and then go see the movie afterwards . 
 Person1:        Sounds like a plan . Let's meet in front of Tower Records at 12:00 . 

informal