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'.

[EX Q]: Person1: I think Andy's party will be fun .
Person2:Yeah , I think so . Oh , by the way , I need to ask you something .
Person1: What's that ?
Person2:Could I get back the sweater you borrowed ?
Person1: Sure . Oh , that reminds me . Could I borrow your black leather boots ?
Person2:My boots ? Er ... Sure , ok .
[EX A]: formal

[EX Q]: Person1: Good morning . Is this where I can get a library card issued to me ?
Person2:No problem , we have a short form right here ; just hand it to me when you are done .
Person1: I'm done .
Person2:That looks great , but I will also need your driver's license or other form of I . D .
Person1: Sure , here it is .
Person2:Well , this looks nice . Do you know how to use it ?
Person1: I am pretty sure how to use it , but can you remind me ?
Person2:Of course , just remember that all of the needed information is on the card .
Person1: I see .
Person2:Well , I hope you have a wonderful time on your library visits !
[EX A]: informal

[EX Q]: Person1: Harry is so down that he won't talk to anyone .
Person2:I know only too well what that's like .
Person1: What do you mean ?
Person2:I was very sad when I was laid off last year .
[EX A]:
formal