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 Input:
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 .

Ex Output:
informal

Ex Input:
Person1: Can I help you ?
Person2:Yes , I'm looking for a house .
Person1: To buy or to rent ?
Person2:Oh , to rent .
Person1: How much do you want to pay ?
Person2:About 300 a month .
Person1: Well , I've got one here . It's 260 a month .
Person2:How big is it ?
Person1: It's got a kitchen , a bathroom , and one bedroom .
Person2:Well , actually I prefer something a bit bigger if that's possible .
Person1: Yes , I think so . There is also an interesting one.It ' s opposite the park .
Person2:How much is it ?
Person1: It's 325 a month . It's the biggest we've got in this area .
Person2:What's it like ?
Person1: Well , There're two bedrooms , a sitting room , a kitchen and a bathroom .
Person2:It sounds interesting . Can I go and see it ?
Person1: Of course , Sir .

Ex Output:
informal

Ex Input:
Person1: We ' re trying to get donations .
Person2:What are you getting donations for ?
Person1: We ' re getting donations for the campaigns .
Person2:How much money are you looking to make ?
Person1: As much as we can .
Person2:Are you doing different fundraisers ?
Person1: We ' re just going door to door .
Person2:You should do something else .
Person1: Do you have any suggestions ?
Person2:Try a car wash and selling candy .
Person1: That is a good idea .
Person2:You ' ll make more money that way .

Ex Output:
formal