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:       Hello , sir . Can I help you ?  
 Person2:Yes . I want to apply for a job you posted on the Internet yesterday .  
 Person1:        What ’ s the job title ?  
 Person2:Service Technician . How can I apply for this position ?  
 Person1:        You need to fill out an Application Form .  
 Person2:Where is it ?  
 Person1:        It is on the desk over there . Be sure to fill out everything . Don ’ t leave any blank spaces . When you ’ re done bring the application to me .  
 Person2:Okay . Thanks . 

formal