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: Could you tell me the right time , please ?
Person2:Well , my watch says five past two , but it's no use relying on it , because it has been gaining and losing these last few days .
Person1: You'll have to get it fixed .
Person2:Yes , I will .
formal

Person1: Please excuse me , but I really have to be going .
Person2:Yes , of course.It was nice to see you .
Person1: It was nice to see you , too.And please give my regards to Mrs.Robbins .
informal

Person1: Thomas , would you be so kind as to lay the table for me ? I'm busy in the kitchen .
Person2:Of course ! Where are the things ?
Person1: They're all here .
Person2:Right ! I'll do it straight away .
Person1: Thanks a lot . I'm most grateful .
informal