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:       I couldn't wait to meet you in person . 
 Person2:Me , too . I've heard so much about you . 
 Person1:        Same here . 
 Person2:I was looking forward to your arrival . 

informal