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:       Well , you seem to enjoy speaking English . 
 Person2:You can't help learning when you're using it all day.You ' ll see . A few weeks ' study in the school will have a similar effect on you . 
 Person1:        I hope so.You see , at the moment I find it difficult to get used to the teacher's speed and accent . I'm awfully worried , I can't reply as quickly as she seems to expect . 
 Person2:Oh , she likes keeping us on our toes by getting us use English throughout the class.She doesn't mind your making mistakes , though . 
 Person1:        You know , speaking in class is a very good chance to put your English to practical use . 

informal