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 Q]: Person1: What happened to you yesterday ?
Person2:Oh I fell over on the way to work .
Person1: Oh I see . So that ' s why you didn ' t come in ?
Person2:Yes and I broke my phone too so I couldn ' t call you .
Person1: Oh dear , that sounds terrible .
Person2:It was ! But the worst thing was I tore my best shirt .
Person1: Oh dear . Well , get well soon and try to be more careful in future .
[EX A]: informal

[EX Q]: Person1: I wonder if we can change to Channel 5 .
Person2:Why ?
Person1: I want to know what's on that channel .
Person2:Oh , good .
Person1: There is a football match .
Person2:I prefer TV play to football .
Person1: OK . Could you turn it down ?
Person2:What are you going to do ?
Person1: I'm going to listen to the radio .
Person2:Maybe we can enjoy the TV play together . It's interesting .
[EX A]: formal

[EX Q]: Person1: Hello , I'm sorry for calling this late . May I speak to Peter ?
Person2:I'm sorry . He's not in right now .
Person1: When is he coming back ?
Person2:He should be back in ten minutes . Could 1 you call back later ?
Person1: I'll call again in thirty minutes .
[EX A]:
formal