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: I'm sorry for being late .
Person2:You're supposed to stand here quietly until the flag - raising ceremony is over .
Person1: About what time can I go to my own class ?
Person2:When everything is over .
Person1: Now that it is all over . can I go now ?
Person2:Not yet . You should stand still for another few minutes . Late-comers must be recorded .
Person1: That's too bad !
Output:
formal