Given the task definition and input, reply with output. 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: Hi , do you have any tickets for the show tonight ?
Person2:Sorry , it ' s all sold out .
Person1: Well , do you have any for tomorrow ?
Person2:We have tickets for the matinee . It starts at 3p . m .
Person1: Ok . I ' ll take it .
Person2:Where would you like to sit ?
Person1: Do you have anything in the middle section ? I want a good view , but sitting too close hurts my eyes .
Person2:Certainly .
informal