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 really look familiar .  
 Person2:Really ? My name is Gretchen Hammer . What is your name ?  
 Person1:        My name is Phillip Hammer . I think we are related . Who is your dad ?  
 Person2:Jacob Hammer . He is originally from Holland .  
 Person1:        That's my uncle . You're my cousin ! Hi cousin !  
 Person2:It's really a small world , isn't it ! The Hammer family isn't very big .  
 Person1:        It really is . Do you have time to eat dinner and catch up ?  
 Person2:I always make time for family . 

informal