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:       Jack , you should have known in general the situation of our company now . 
 Person2:Yes , and I am very satisfied with it . 
 Person1:        Do you have any other questions ? 
 Person2:Would you please tell me about fringe benefits of the company ? 
 Person1:        OK , we will pay insurances for employees after the probationary period . 
 Person2:What do they include ? 
 Person1:        Include endowment insurance , medical insurance , unemployment insurance , work-related injury insurance and maternity insurance . 
 Person2:That sounds great . 
 Person1:        Employees will also have housing payment reserve funds . 
 Person2:The fringe benefits in your company are excellent , and it's generous of you to offer five insurances and one fund 
 Person1:        Do you have other questions ? 
 Person2:I want to know if the staff can get a vacation every year . 
 Person1:        The permanent staff can have a paid month-long vacation every year . Besides , they also get chances of free traveling . 
 Person2:That's quite good . Thank you for telling me about those . 

informal