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'.

Example Input: Person1: Hey , Vernassa . why be angry look ?
Person2:It's the new neighbor . I hate her guts .
Person1: I've never seen you so worked up . what did she do to you ?
Person2:She made another white crack about my clothes .
Person1: Are you sure she was trying to put you down ?
Person2:Of course , I am sure .
Person1: You shall go easy on her . she is new here .
Person2:Just how am I supposed to do that ?
Person1: You shall just take it in surprise .
Person2:I've tried , but she keeps pushing my buttons .
Person1: Try to pull it together , Vernassa . I am sure things will turn note , ok ?
Person2:I am not . she is no picnic .
Person1: Well . if you think I can help , let me know .
Person2:Thanks , Serena .
Example Output: informal

Example Input: Person1: How many languages can you speak ?
Person2:Besides Chinese , I can speak English and French .
Person1: You mean you can read and write both of them ?
Person2:No , I can only carry on a simple conversation in French .
Person1: Can you read and write English well ?
Person2:I can speak the language better than I read and write .
Person1: Do you speak the language well enough to communicate with people of English-speaking countries ?
Person2:I think so . I used to be an interpreter .
Person1: Do you think your English is good enough to do desk work ?
Person2:The amount of English I know enables me to do general desk work . I believe what I know is sufficient to work in an American firm .
Example Output: formal

Example Input: Person1: Where is some fresh produce that's on sale ?
Person2:Well , I think you'll like the mangoes .
Person1: I've never had a mango .
Person2:It's a fruit . It has a big stone in it .
Person1: Can you eat the stone ?
Person2:No . You would break all your teeth on it .
Person1: How much are these mangoes ?
Person2:The sale price today is $ 1 each .
Person1: Can you describe their taste ?
Person2:They usually taste sweet , but they remind me of an orange .
Person1: How can I tell if they're ripe ?
Person2:Don't cut into them until you can feel that they're soft on the outside .
Person1: What country produces them ?
Person2:They come from tropical countries .
Example Output:
formal