instruction:
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'.
question:
Person1: ... I knew it . I always knew you were a lesbian !
Person2:She's my roommate , not my date . The D-man , as in dork .
Person1: Haha . Still got that great sense of humor , I see . Here's my card . I sell used cars . A car from us is a car you can trust !
Person2:Alrighty then . Didn't you use to date Sheryl ?
Person1: Sweet little lassie . Yep , broke her heart when the D-man told her he couldn't be a one-woman guy .
Person2:Oh ? I heard she dumped you . Anyway , she's right over there . Oh , Sheryl !
answer:
formal

question:
Person1: Do you want to go out for dinner tonight ?
Person2:Sure . Have you got anywhere in mind ?
Person1: I'm starving , so maybe we could go somewhere with large portions .
Person2:That Italian restaurant in the city centre always has large portions . Do you want to go there ?
Person1: I'm not really in the mood for Italian , actually . I was thinking of something a bit spicy .
Person2:If you want spicy food , then I'd recommend going to a Thai , Indian or Chinese restaurant . How about that Chinese buffet on Cowley Road ?
Person1: I really like that restaurant ; you get a lot for your money there . But , they've westernized their food , so it's not actually that spicy .
Person2:You're right . Most of their dishes have sweet sauces . We could try that Indian restaurant just down the road from us .
Person1: The Taj ? They're a bit expensive , but they do serve large portions of very hot food .
Person2:The Taj it is then .
Person1: Shall we bring our own bottle of wine to save some money ?
Person2:They'll still charge us a corkage fee .
Person1: That's right . It'll probably work out to be about the same then anyway .
Person2:Don't worry about money . I'll treat you tonight .
Person1: Are you sure ? We could go Dutch .
Person2:No , I'll pay . It's my turn anyway . You paid last time .
Person1: I won't argue with that ! Let's go !
answer:
informal

question:
Person1: Mary , I think we should stop seeing each other .
Person2:But , Bob , we were so good together .
Person1: I'm sorry but it's for the best .
Person2:I don't understand . We were getting along so well .
answer:
informal