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'.
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Question: Person1: I went out with Leo last night . It was really exciting .
Person2:Really ? You are a lucky dog . You know , many girls dream of dating him .
Person1: Yes , I know . He's really on the A-list .

Answer: informal

Question: Person1: What's taking you so long ?
Person2:Don't worry . I'm almost finished .
Person1: I need you to hurry up .
Person2:All right . I'm finished .
Person1: I think there's more you need to do .
Person2:What do you mean by that ?
Person1: My hair looks awful .
Person2:What don't you like about it ?
Person1: I just don't like my hair .
Person2:I'm sorry that you don't like it .
Person1: I won't be paying you for this .
Person2:I'm sure we can work something out .

Answer: informal

Question: Person1: Frank , I want your advice on something . Some scientists I met at the conference 6 this afternoon have invited me to a party . Actually , they called it an informal get-together .
Person2:And what ' s the problem ?
Person1: When I asked how people were going to dress , Dr . Lite said it was casual .
Person2:And you want to know what to wear ?
Person1: Well , last night I went out with some journalists for a casual party , but I was overdressed . I wore what I consider casual - - an outfit of skirt , blouse , scarf , and medium heels ... you know .
Person2:That sounds just right to me . What was wrong with it ?
Person1: Everyone else there was wearing blue jeans . Several of the women had on running shoes . I felt out of place . So I have no idea what to wear tonight .
Person2:My guess is you can safely wear last night ' s outfit to tonight ' s party .

Answer:
formal