You will be given a definition of a task first, then some input of the task.
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: I really need to find a bus that goes by PCC .
Person2:Where do you need to catch this bus at ?
Person1: All the way up on Las Flores Drive and Fair Oaks .
Person2:I can tell you what bus to catch , but you have to walk a little bit .
Person1: Walking isn't a problem for me .
Person2:The 267 stops at Altadena Drive and Fair Oaks .
Person1: Which direction do I want ?
Person2:Get on the bus heading west .
Person1: Do you know where I get off at ?
Person2:Del Mar and Hill .
Person1: Thanks for letting me know , home-girl .
Person2:No problem .
Output:
informal