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:       Do you offer a course in business management ? 
 Person2:Yes , we do . 
 Person1:        How many nights a week is it ? 
 Person2:It's 3 nights a week , Monday , Tuesday and Thursday . 
 Person1:        And how long does the course last ? 
 Person2:It lasts for 9 months . 
 Person1:        When does it start ? 
 Person2:The next beginning class starts on October 25th . 
 Person1:        What time is the class ? 
 Person2:From 7 to 9 o'clock . 
 Person1:        How much does it cost ? 
 Person2:It costs 125 dollars a month . 
 Person1:        Yes , that's all right . I want to enroll in the course . 
 Person2:Thank you , please fill out this form for us . 
 Person1:        Do you want me to fill it out now ? 
 Person2:Yes , please.we need a record of you education and your work experiences . 

formal