instruction:
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'.
question:
Person1: Do you know that John isn't going to come back to our school ?
Person2:Really ? Why ?
Person1: He had moved and held a party on July 1st .
Person2:It's a pity that I was traveling around Europe at that time .
Person1: Even he's not coming back to school anymore , you still can call him and meet him on weekends .
Person2:You're right ! I will call him this weekend and meet him .
answer:
informal

question:
Person1: Excuse me , sir .
Person2:What's the matter ?
Person1: I heard that we will call at some ports on the way . Is that true ?
Person2:Yes .
Person1: Where will we call at ?
Person2:Dalian .
Person1: Dalian is my hometown .
Person2:Really ?
Person1: Can I get off the ship and walk around ?
Person2:Sorry . I'm afraid you couldn't .
answer:
informal

question:
Person1: Darling , this dress is for you . I hope you like it .
Person2:Oh , very beautiful . Thank you , Steven , I like it very much .
Person1: Your birthday is coming , and I think this dress suits you . Why not try it now ?
Person2:My birthday present ? I can't help telling you that I am a happy woman , darling . I will come back soon . ( Go to her bedroom and wear the new dress , then show it to Steven . )
Person1: It fits me exactly . How does it look like ?
Person2:It displays your slender figure , darling .
Person1: The most important thing is that you bought it for me . I am happy that you know my size and style .
Person2:Because you are my dear wife .
answer:
informal