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:       Hey Michelle . Good to see you . Are you at lunch ?  
 Person2:Oh hi Jim . No I just got back . I thought you were on vacation now .  
 Person1:        No , I wish I was ! I just got back from Spain actually .  
 Person2:Oh wonderful ! Have you been there before or was it your first time ?  
 Person1:        My first time . I've traveled around Europe a lot , but this was my first time to Spain . It was amazing , and the weather was just beautiful ! No rain , and just sun , sun , sun ...  
 Person2:I'm so jealous of you . I've never been anywhere in Europe . I've always dreamed of traveling around and seeing the sights .  
 Person1:        Well , I really recommend Spain . You really should go . Anyway , it's been great to catch up , but I must be going , this is my floor . Speak again soon I hope . 

informal