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:       In the past half year , we made some schedules and objectives , do you still remember that ? 
 Person2:Of course . I spent the whole week to know the general process for these plans . And since I was employed , I have been working on them . Madam , how am I doing ? Are you satisfied with my job ? 
 Person1:        How do you feel what you have done ? Did you meet our goals ? 
 Person2:I suppose so . I tried my best to be familiar with all these appliances and office process . Certainly without my colleagues ' help , I could not do these things in such a short period . 
 Person1:        Yes . And you also overworked in last month , when Steven asked for leave . I have been very satisfied with your performance . And your dependability has been a great asset . 
 Person2:Thanks for your praise , Madam . 

informal