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:       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 . 

formal