Definition: 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:  Person1:       What day is today ?  
 Person2:It's Thursday , I think .  
 Person1:        Tomorrow is Friday . It's going to be the weekend .  
 Person2:We're busy on weekdays , but we'll have a good rest at the weekend .  
 Person1:        We'll meet again in a few days . 

formal