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:       Rose , the weekend is coming . Let's discuss what we will do . 
 Person2:What about going to the zoo on Saturday and to the park on Sunday ? 
 Person1:        Sounds good . But on Saturday there's a football final . 
 Person2:Then , what shall we do on Sunday . 
 Person1:        Let me see . We can visit the country . We haven't done that for such a long time . 
 Person2:Good idea . I'll go shopping in one of the department stores nearby . We'll go to the zoo and the park another time . After all , we can put that off . 
 Person1:        OK . 

informal