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 .
Output:
informal