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: Good morning . Is this where I can get a library card issued to me ?
Person2:No problem , we have a short form right here ; just hand it to me when you are done .
Person1: I'm done .
Person2:That looks great , but I will also need your driver's license or other form of I . D .
Person1: Sure , here it is .
Person2:Well , this looks nice . Do you know how to use it ?
Person1: I am pretty sure how to use it , but can you remind me ?
Person2:Of course , just remember that all of the needed information is on the card .
Person1: I see .
Person2:Well , I hope you have a wonderful time on your library visits !

Output: informal

Input: Consider Input: Person1: I don't think much of the film .
Person2:But I think it wasn't too bad .
Person1: Really ? Do you like the story ? It's sheer nonsense !
Person2:It's exaggerated . Actually this sort of thing happens to everyone .

Output: informal

Input: Consider Input: Person1: I like to stay here .
Person2:Why ?
Person1: People are very kind down your way . You ' re lucky .
Person2:Yes , do you always gather to welcome new comers ?
Person1: Never .
Person2:Really ?
Person1: Yeah . People down our way hardly speak to each other .
Output: informal