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: I'm going to America .
Person2:Any idea when you'll leave ?
Person1: I hope before the end of the month .
Person2:Let me know when you find out .
Example Output: formal

Example Input: Person1: Have you any tour route to Budapest ?
Person2:Yes , I have , sir . How long are you going on vacation ?
Person1: About 2 weeks .
Person2:I recommend you this route . We call it golden routes for the sightseeing spots .
Person1: Well , will you offer me any reduction since it's a out-of-season tour ?
Person2:Of course , we will , sir .
Example Output: formal

Example Input: Person1: Honey come on ! We are going to be late ! Honestly , you take longer getting ready than I do !
Person2:I was drying my hair and ironing my shirt ! Can you come here for a sec ? I need your help .
Person1: What is it ? Why are all these clothes on the bed ?
Person2:I don ' t know what to wear ! Ok , give me your opinion . Do you like the way this looks ? The striped short sleeved shirt with this checkered sweater and my lucky sandals . I like the cut and hemline of these shorts so I think I ' ll wear these as well .
Person1: Are you joking ? What am I going to do with you ? We are going to a dinner party not the beach ! Wear the shirt with the silk tie I bought you and these corduroy pants . It ' s chilly outside so you can wear this coat .
Person2:Thanks honey ! You have such great fashion sense.Now , what am I going to do with my hair ?
Example Output:
informal