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'.

Input: Consider Input: Person1: Tony looks very handsome in the suit .
Person2:He prefers suits to jackets .
Person1: Judge from his look , he's a very serious person .
Person2:As a matter of fact , he is .

Output: informal

Input: Consider Input: Person1: hi , come on in . Can I take your coat ?
Person2:sure , thanks . I brought you a bottle of wine as well .
Person1: you're the first guest to arrive . I'll just put your coat away and then I'll get you something to drink .
Person2:should I take my shoes off ?
Person1: whatever you prefer .
Person2:this is a very nice place . How long have you been living here now ?
Person1: just over three weeks . Would you like a drink ?
Person2:sure , what do you have ?
Person1: I've got white wine , red wine , gin and tonics , ginger ale , lemonade , orange juice , and sprite .
Person2:I'll have a glass of red wine please .
Person1: one glass of red wine coming up !
Person2:so how many people are coming for the dinner tonight ?
Person1: there's just going to be 6 of us tonight .
Person2:oh , I thought there were going to be eight . who isn't coming ?
Person1: Marcia and Paul called to cancel at the last moment . Paul was running late and Marcia wasn't feeling well .
Person2:that's too bad.They ' re such good company .
Person1: I think there's someone at the door .
Person2:excuse me while I go and get that .

Output: formal

Input: Consider Input: Person1: Martha . What's wrong ? Why are you crying ?
Person2:Jake just broke up with me .
Person1: I'm sorry . When did this happen ?
Person2:Yesterday . I didn't even know it was coming . He just told me he found someone else .
Person1: What a jerk . He doesn't deserve you .
Person2:But it still hurts . I thought I loved him .
Person1: He didn't treat you that well either . Maybe you don't want to hear this , but I think you can do better .
Person2:Better or worse , it doesn't matter . I had a lot of feelings for him . I really liked him
Person1: It must be really painful . I remember when Josh and I broke up . I was crying for a week .
Person2:I know . I'll get over him . My first break up was painful because I was naive .
Person1: Exactly . You'll find someone again . You should get your mind off of this . Let's go shopping .
Person2:Maybe tomorrow . I don't feel like it tonight .
Person1: How about coffee down the street ?
Person2:Sure .
Output: informal