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: How come you're still up ? Shouldn't you be asleep by now ?
Person2:I've been having a hard time sleeping lately .
Person1: As far as I know , insomnia is usually caused by stress . Are you stressed at all ?
Person2:Well , I'm really worried about my grades . I didn't think this course would be so stressful .
Person1: You're a good student . I'm sure you can do well . What you need to do is to relax .
Person2:You're probably right . I just wish it were that simple . How can I stop feeling so anxious all the time ?
Person1: Taking a yoga class or learning some relaxation techniques can help you cope with your stress .
Person2:I don't really have time to learn anything new . I need to spend my time studying !
Person1: You need to take some breaks throughout the day . Studying all day isn ' t very usually effective .
Person2:You ' re right . I usually end up staring at my computer or checking my email instead of doing my work for class .
Person1: Besides , it ' s not difficult to learn yoga . In fact , I can teach you a move that ' s supposed to help you fall asleep ! You just have to sit down like this , bend over and breath in deeply .
Person2:That ' s fantastic . I ' m going to go try that out in my room now . good night !
Person1: Good night , sleep tight ; don ' t let the bed bugs bite !
[A]: informal

[Q]: Person1: Well , Peter , you have to do better than that next time , won ' t you ?
Person2:Have I really got to do those exams again , Dad ?
Person1: Of course , you have . You must try harder this time .
Person2:And must I go back to school ?
Person1: No , you needn ' t do that . You ' d better get a part-time job somewhere and go to evening classes .
Person2:But Dad , I should be working full-time at my age . I ' m nearly 17 .
Person1: You ought to have worked harder then you wouldn ' t have failed your exams . You have to take a job and study .
Person2:What else I ' Ve got to do ? Join the army ?
Person1: Who knows ! That might come to later .
[A]: informal

[Q]: Person1: Hi Bill , I saw your grandma yesterday .
Person2:Oh where was that ?
Person1: I was running around the track at my college and there she was walking around the same track .
Person2:Grannie always tries to stay fit and healthy.She is always making us kids eat the proper foods .
Person1: Well , it pays off for her.How old is she anyway ?
Person2:She will be 86 next month .
Person1: That is truly amazing !
[A]:
informal