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:       Excuse me , ma ’ am ? 
 Person2:Yes . What can I do for you ? 
 Person1:        I ’ m new here and I can ’ t seem to find the lunch room . 
 Person2:Oh , it ’ s right downstairs . I ’ m going there myself . Just follow me . 

formal