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:       Hi , I am looking for a woman named Mia .  
 Person2:I think I am who you are looking for . You have got to be Rubin .  
 Person1:        That would be me !  
 Person2:Rubin ! Karen and Mike have spoken about you so often that I feel like I've met you before .  
 Person1:        I hope that what they had to say was mostly good !  
 Person2:They only said wonderful things about you . You did a good job of finding me .  
 Person1:        Finding the beautiful woman in a red dress next to the fountain wasn't all that hard .  
 Person2:Yes , I guess it was a choice of me or the pigeons !  
 Person1:        I was hoping that we could take a walk down the street to my favorite cafe .  
 Person2:Lunch sounds great ! Let's head on out ! 

informal