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'.

Q: Person1: So Kevin , what is your type ?
Person2:I like girls who like to have fun , and aren't too serious .
Person1: I agree . I like guys that can make me laugh .
Person2:That's true . Having a very serious boyfriend or girlfriend can be boring .

A: informal
****
Q: Person1: Your knowledge of English is really surprising .
Person2:Oh , it's nothing to speak of .
Person1: No , seriously . I am impressed .
Person2:Thank you . I appreciate the compliment .
Person1: Your knowledge of English is really surprising .
Person2:Oh , it's nothing to speak of .
Person1: No , seriously . I am impressed .
Person2:Thank you . I appreciate the compliment .

A: informal
****
Q: Person1: Come back . You haven't paid yet .
Person2:May , just let him go .
Person1: But he took some newspaper away without paying .
Person2:I know .
Person1: Why ? You make me confused .
Person2:He lives nearby and he would just glance at the newspaper headlines , read the political sections and return them later .
Person1: Why does he have such a privilege ?
Person2:He used to be a hero during the war time and everyone respect him .
Person1: I see . Does he live by himself ?
Person2:Yes , he has no children and his wife passed away when he was in the battle .
Person1: He must be lonely ?
Person2:I bet . But he is always busy telling the children stories .
Person1: How respectable !

A:
informal
****