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'.
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Question: Person1: Susan has been down recently . I saw her this morning , she looked terrible !
Person2:You have any idea why ?
Person1: She broke up with her boyfriend .
Person2:I heard her boyfriend is married .
Person1: She still loves him . That's why she feels upset . Her love is always hard and confusing ...
Person2:Then what about you ? How are you getting on with your boyfriend ?
Person1: He sometimes really drives me crazy .

Answer: formal

Question: Person1: Is there a vacant table for two now ?
Person2:Yes , sir , let me show you the table . This way please .
Person1: Well , we would like to sit over there . Is that all right ?
Person2:Of course .

Answer: formal

Question: Person1: Hello Martin . Have you been to any events yet ?
Person2:Yes I have . I went to the table tennis yesterday .
Person1: Oh wow . How was it ?
Person2:Oh . It was great . I love Ma Lin . He ' s my favourite table tennis player . Have you seen anything yet ?
Person1: Oh I still haven ' t managed to get any tickets . I ' d love to see something though .
Person2:Well , let ' s go to the marathon tomorrow then ! We can just stand by the side of the road .
Person1: What a great idea .

Answer:
informal