You will be given a definition of a task first, then some input of the task.
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'.

Person1: You have any ideas as to what you want to do this weekend ?
Person2:I'm going to the movie theater with my friend . What are you going to do ?
Person1: I'm not quite sure yet .
Person2:How about you see a movie with me and my friend ?
Person1: What movie are you and your friend planning on watching ?
Person2:Not sure . Is there a movie out that catches your eye ?
Person1: No good movies come to mind .
Person2:Have you decided whether or not you would like to go ?
Person1: No , thanks . Maybe another time .
Person2:For sure another day .
Output:
formal