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:       Elaine ’ s back from school . I think it might be a nice gesture if you asked her out . I suppose she ’ s not good enough for you , is that it ? 
 Person2:Look , Elaine Robinson and I do not get along . 
 Person1:        How do you know ? You haven ’ t seen her since high school . I guess your evenings , whatever you do with them , are just too valuable . 
 Person2:That has nothing to do with it ... 
 Person1:        I guess I ’ ll just have to tell Mr . Robinson that you ’ re too busy every evening – doing God knows what ... God don ’ t go on like this . If you absolutely refuse to take her out ... 
 Person2:I do . 
 Person1:        Then I will simply have to invite all the Robinson ’ s over for dinner on Thursday . 

formal