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 need some flowers for my girlfriend .
Person2:No problem . Would you like some artificial carnations ?
Person1: Oh , no . Carnations are not very elegant.Artificial flowers have no passion .
Person2:How much did you want to spend ?
Person1: Money is no object .
Person2:Our most elegant flower is Golden Lily .
Person1: I will take ten .
Person2:Do you want to add some baby ' s breath for that ? They are equally popular now .
Person1: Of course . Can I have it delivered to my girlfriend's house this afternoon ?
Person2:Yes , but there is a five dollars delivery charge .
Person1: That's ok . Here is the address .

Output: formal

Input: Consider Input: Person1: I need help in ordering my office supplies .
Person2:You can print out a copy of the Order Supply Form from our company web site and turn in into me . What will you be needing ?
Person1: I need ink cartridges , staples , and Post-its .
Person2:Will you need all of them right away or can some wait ?
Person1: Some of these can wait but there are a few things that I need right away .
Person2:You can only buy supplies that you have a budget for . Do you know what your budget is ?
Person1: We have plenty of money for office supplies .
Person2:You can pick these supplies up or they can be delivered to your building . Which would you prefer ?
Person1: I want to pick them up .
Person2:Well , just finish the request and we will contact you when the supplies come in . Have a good day !
Person1: You too !

Output: informal

Input: Consider Input: Person1: Donna , you really shocked everyone at the party last night !
Person2:You mean with my performance ?
Person1: Yes ! We have all assumed that you were the quiet , shy type .
Person2:I guess everyone has a few secrets up their sleeve .
Person1: Where did you learn to sing like that ?
Person2:I was part of a band in school .
Person1: You ? Wow . And why don't you ever dress like that at work ?
Person2:Come on ! This is work . Don't you think that would be a little weird ?
Output: informal