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: We've got a problem ... it looks like we'll need more spotlights on the exhibition booth . The client thinks it's too dark , and they want to add halogen lighting . We've already got 3 sets of track lighting from you guys , do you think you could help us out and throw in some halogens ?
Person2:Oh ... Um ... I don't think so . you know the halogen lighting is much more expensive than your track lighting system . Plus I'm going to have to call in some guys to install it for you . That's not going to come cheap .
Person1: But it would only be adding to the existing structure . We're not talking about anything new here ...
Person2:It doesn't matter because we will still have to call the electrician out , and they are union labor . It'll cost you a pretty penny ...
Person1: How much do you think it would cost ?
Person2:Mumm , I estimate it'll run in the neighborhood of ... $ 500 per light .
Person1: $ 500per light ? ! That's ridiculous ! It can't possibly be that expansive !
Person2:It is , I'll tell you why . We'll have to call in the electrician , he's going to charge overtime now because it's already 5PM , and it will probably take him an hour a light . Plus , the halogen lights take more electricity , so your electrical cost is going to be higher as well .
Person1: Can't you give me a break on this ? We've already spent so much money on lighting , I hate to have to blow so much more on halogens .
Person2:No , that's the cost , and that's what it's going to cost us . We can't go in the hole with this . I am giving you my best price , so take it , or leave it .

Ex Output:
informal

Ex Input:
Person1: Is your lady beautiful ? Since I came here from the country , I've not seen her close . Tell me , is she beautiful ?
Person2:Thomas , if I could write with the beauty in her eyes , I was born to look in them and know myself .
Person1: And , her lips ?
Person2:Her lips ? The early morning rose would wither on the branch if it could feel envy .
Person1: And her voice like a lark's song ?
Person2:Deeper , softer , none of your twittering larks . I would banish nightingales from her garden before they interrupted her song .
Person1: Oh , she sings too ?
Person2:Constantly . Without doubt , and plays the lute . She has a natural ear .

Ex Output:
informal

Ex Input:
Person1: Hi , Lucy . What are you going to do this weekend ?
Person2:I have no idea yet . Do you have any suggestions ?
Person1: Would you like to play tennis with me ?
Person2:I'd like to .
Person1: Be sure to get to the sports hall at nine o'clock on Sunday morning .
Person2:OK , will do !

Ex Output:
informal