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 , could you tell me my test results ?  
 Person2:Your results are posted on the website . Just put in your password and you can see the exact numbers .  
 Person1:        Are you saying that all my results were normal ?  
 Person2:We always contact you by phone to come in if there is a need for follow-up .  
 Person1:        How will I know what the results mean on the website ?  
 Person2:The purpose of each test is given on the site .  
 Person1:        Will the numbers mean anything to me ?  
 Person2:The website will give you your results and then tell you what the normal range is .  
 Person1:        Can I see all of my test results at once ?  
 Person2:Yes , you can see every test for the past five years . You can compare them . 

formal