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'.

Ex Input:
Person1: Have you any tour route to Budapest ?
Person2:Yes , I have , sir . How long are you going on vacation ?
Person1: About 2 weeks .
Person2:I recommend you this route . We call it golden routes for the sightseeing spots .
Person1: Well , will you offer me any reduction since it's a out-of-season tour ?
Person2:Of course , we will , sir .

Ex Output:
formal

Ex Input:
Person1: Let's get together this weekend .
Person2:Sounds good .

Ex Output:
informal

Ex Input:
Person1: What's up , buddy ? You look so upset .
Person2:I just broke up with a girl . Why didn't she understand that I loved her ?
Person1: I'm sorry to hear that . What's your conflict ?
Person2:I don't know . She always said I didn't love her , but I did .
Person1: Did you think about talking to her again ? Maybe she is waiting for your call .
Person2:I have asked for a talk again , but she refused and said she wanted to be quiet .
Person1: Come on , guy . Maybe she isn't your right person .

Ex Output:
informal