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'.

Person1: Would you like to come over for dinner tonight ?
Person2:Sure , but I have to tell you that I've become a vegetarian . I don't eat any kind of meat .
Person1: When did you decide to become a vegetarian ?
Person2:I saw a program a few months ago about how animals are raised for human consumption . I haven't been able to eat a single piece of meat since .
Person1: That's great . Do you find that you eat a lot more fruit and vegetables now ?
Person2:Definitely . I've also been buying organic fruit and vegetables , which is more expensive , but much better for you because they don't have any pesticides on them .
Person1: You've really turned into a health nut , haven't you ?
Person2:I guess you could say that . Eating fruit and vegetables helps keep you healthy . I've lost 5 pounds and I feel great !
Person1: How do you get enough protein in your diet ?
Person2:Well , I eat a lot more tofu , beans , nuts and some fish .
Person1: Well , don't worry about dinner . I'll only make vegetarian dishes for you . Do you like sushi ?
Person2:I prefer cooked fish to raw fish , but if you really like it , make it .
Person1: How about a spicy tofu and vegetable stir-fry ?
Person2:That sounds great . What time should I come over ?
Person1: Dinner will be ready at about 7:30 pm , so you can come over at 7 p . m .
Person2:Sounds good . See you there !
informal

Person1: you are dressed to kill . You look gorgeous , Alexander .
Person2:thanks . This is my power suit . I have a dinner date tonight .
Person1: how did you meet each other ?
Person2:she's a friend of Amy . We met at Amy's birthday party .
Person1: is this your first date ?
Person2:yes . I hope it pans out . Cross your fingers , Lily .
Person1: sure it will . Oh , no , it's seven fifteen already . I'm going to be late for my date .
Person2:oh ... so you buried the hatchet with Steven ?
Person1: absolutely not ! He's a cheater . I will never talk to him again . I'm over with him . He's history !
Person2:then who will you meet tonight ?
Person1: a guy I met on the internet three month ago .
Person2:really ? Are you sure this is a good idea ?
Person1: please don't be so fussy ! I didn't just meet him yesterday .
Person2:I know , but remember to meet in a public place and don't give out your personal information .
informal

Person1: Daddy , what's next ? What else do we do now ?
Person2:There is a man-made fishing pond nearby . So , What do you think of going fishing there ?
Person1: Great . Let's go . Where is it ?
Person2:Patience , boy . A watched pot never boils . We shall get out fishing stuff first and make some baits , too .
Person1: We have many cookies left here . Can we use them as baits ?
Person2:I don't think fish would like them . Instead , they love earth worms .
Person1: So let's go and catch earth worms !
Person2:OK . I think that's enough for today . Let's go .
Person1: Daddy , do you think we're gonna catch any fish today ? We've been fishing here for more than two hours , and we get nothing .
Person2:That's because you're talking to me all the time . Be patient , or there will be no chance to have sashimi for dinner today .
Person1: I love sashimi . Did mom bring any soy sauce for that ?
Person2:I suppose she did . Be quiet . There is a fish on the hook . Here it is . Look , a big one .
Person1: Cool . Hey , I've got an idea . Why don't we cook it separately ? Half for sashimi , and the other half for grill .
Person2:Great idea . But the fact is we have no barbecue with us . Moreover , the sashimi will be great . So why do we bother to waste time on barbecuing the fish ?
Person1: Well , all right . There is nothing to complain about .
informal