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:       What is your salary now ?  
 Person2:My present pay is RIB 3 , 000 yuan each month .  
 Person1:        What's your expected salary ?  
 Person2:What is important to me is the job and the people who I will be working with , so regarding salary , I leave it to you and I am sure that you will make me a fair offer .  
 Person1:        I can offer you 5 , 000 yuan per month . Raises are given after three months ' probation period according to your performance . Is this satisfactory ?  
 Person2:Yes , it is quite satisfactory . I accept it .  
 Person1:        Any question about the work ?  
 Person2:To whom should I report ?  
 Person1:        The general manager of your section .  
 Person2:What are the benefits ?  
 Person1:        We'll offer that on holidays .  
 Person2:I would like to know if there would be any opportunity to work abroad in the future ?  
 Person1:        Yes , we have inspection abroad .  
 Person2:Thank you . Then I think it's time for us to sign a letter of intent .  
 Person1:        Okay . 

formal