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: I think he deserved his gold .
Person2:Did you see his last dive .
Person1: Yes , it's perfect !
Person2:He's diving for the gold .

Output: informal

Input: Consider Input: Person1: The weather in Beijing is just beautiful !
Person2:Autumn is the best season in Beijing , you know .
Person1: Yes , I can see . The summer heat is over , and the winter cold is still far away .
Person2:What is the weather like in Washington at this time of this year ?
Person1: Autumn is also very nice in Washington .
Person2:Is it very cold in winter there ?
Person1: No , it isn't . But sometimes it snows a lot in winter .
Person2:Does it rain a lot in summer there ?
Person1: Oh yes ! Sometimes it rains very heavily.How about here in Beijing ?
Person2:There's a lot of rain in summer , but it seldom rains in autumn .
Person1: I feel it's rather dry here .
Person2:That's true . Many people from the south don't like the weather here .
Person1: Are you from the south ?
Person2:No , I'm from the north . I was born in Beijing , actually .
Person1: I see.so this is your hometown ?

Output: informal

Input: Consider Input: Person1: Now that it ' s the new year , I ' Ve decided to turn over a new leaf .
Person2:Yeah ? You finally decided to wipe the slate clean ?
Person1: You got it ! I have a new job , I ' m living in a new city , with new friends ! This is my opportunity to make some small changes in the way I live my life .
Person2:So what are you going to do ? Take up an art class or something ?
Person1: Well , first of all , I ' Ve decided to stop smoking . It ' s not that I ' m pinching pennies or anything , it ' s just that I ' Ve been smoking since I was sixteen , and I think it ' s time to stop .
Person2:I ' m with you on that one . Anything else you ' re planning on doing ?
Person1: One last thing , I ' Ve decided to come out of the closet .
Person2:It ' s about time !
Output: formal