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: Can we go to the beach on foot ?
Person2:Oh , it's too far to walk there.We can take a bus .
Person1: Is the bus station close by ?
Person2:Yeah , it's a block away down the street .

Ex Output:
formal

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: You know we went great lengths to promote the sales of your products . Through our continuous effort , consumers tend to accept your product . So , there will be a potential market for your product in this area , and would you let us act as your agent ?
Person2:We appreciate your efforts in promoting the sale of our clothes in the market of this city . But according to our record , your annual turnover is not too big , so I think it is premature for us to discuss the question of agency .
Person1: If that's the case , we can talk about it first . What's your concept of a big amount ?
Person2:I mean to double the amount for your sales this year at least .
Person1: I'm afraid that's too much for us .
Person2:We know you have done a good job in building up these exports for us . However , our company has the regulation for the agency .
Person1: All right , we accept the challenge . What about the commission ? You know , we usually get a 20 % commission of the amount on every deal .
Person2:I am sorry to say that it's a little higher . Our agents in other areas usually get a 3 % to 6 % commission .
Person1: You may have known that we have competitors from South Korea and other countries . At the beginning of our campaign , there is sales resistance to overcome , we must send out salesmen to have the market investigation and spend a considerable amount of money on advertising in newspaper and TV programs . A 20 % commission will not leave us much .
Person2:Our price is worked out according to the costing . A 20 % commission means an increase in our price . So , I'm afraid we have to decline your proposal of acting as our sole agent .
Person1: Oh , that's pitiful .

Ex Output:
formal