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'.

Person1: Do you like a package tour or to travel alone ?
Person2:I prefer a package tour , and we don't have to worry about accommodation , meals or that sort of trivial demanding things .
Person1: I prefer travel alone . I'll have a lot of time lingering at one place .
formal

Person1: Excuse me , please.Could you tell me how to get to the No . 10 Middle School ?
Person2:Walk down this road , take the fourth turn to the right.Then you'll see it .
Person1: Is it far from here to there ?
Person2:No . It's only about five minutes ' walk .
Person1: Many thanks !
Person2:Not at all .
informal

Person1: So , how'd everyone do ?
Person2:Well , there's this clock I was ... MY vintage clock ! How do you have my clock ? ?
Person1: Your vintage clock ? ! I just paid sixty-five dollars for it .
Person2:Sixty-five ? What the ... ? How did you bargain him down , Wei ? You've never even been to a flea market before !
Person1: It must be my special touch . I think bargaining is in my blood !
Person2:Never underestimate a woman when it comes to bargaining !
formal