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: Emily , are you getting rushed by a sorority ?
Person2:More than one . I think the count is now three , if I remember correctly .
Person1: Wow . I'm getting rushed too , but just one . Are you thinking of joining any of them ?
Person2:I don't know . I know there are advantages to joining , but I'm not much into group stuff .
Person1: The guys I've talked to say that the activities that go on in a frat house can be a little distracting depending on the group .
Person2:I think I'm going to decline . I just prefer to do my own thing .
Person1: Were your parents involved in that kind of thing at all when they went to school ?
Person2:My dad was , but not my mom .

Ex Output:
formal

Ex Input:
Person1: I can't believe Mr . Fro didn't buy it . Who does that guy think he is anyway ? Bill Gates ?
Person2:He had a lot of nerve telling us our ads sucked .
Person1: Time to order . Balista , today I want a skinny triple latte .
Person2:When did you start worrying about your weight ?
Person1: I'm not . I just don't feel like drinking whole milk today . Why ? Do you think I'm fat ?
Person2:No , Jess , chill out !

Ex Output:
formal

Ex Input:
Person1: Jenny , I was wondering ... if you .. eh are you busy this Friday ?
Person2:Yes , Friday I have a class , right after work .
Person1: Oh , what about Saturday ? Are you free then ?
Person2:Saturday my parents are coming to town . What ' s up ?
Person1: What about tonight ? Do you have plans tonight ?
Person2:No , do you want to go and do something ?
Person1: Yes , yes , I want to take you to dinner .
Person2:Oh , that sounds great . How about 6 o ' clock ?

Ex Output:
informal