TASK DEFINITION: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.
PROBLEM: Sentence1: It's cb12bd. Anything else I can get you? Sentence2: How about something in the south and moderate price range? Sentence3: I'll take Rice House, what's the postcode? Sentence4: There are 3 cheap chinese restaurants in the centre of town: Charlie Chan, Rice House, or Golden House. Would you like me to book any of these? Sentence5: Sure let's try chinese food. Sentence6: I was not able to find any restaurants matching your requirements. Sentence7: I'm still not finding anything. Would you like me to search a different part of town or a different food type? Sentence8: You're welcome. Have a great day! Sentence9: That's all. Thank you. Sentence10: I am looking for a cheap gastropub restaurant in the centre of town Question: Who has spoken the sentence 6? (A) User (B) System

SOLUTION: Answer: (A) User

PROBLEM: Sentence1: Goodbye. Sentence2: Nandos sounds great. Thank you. Sentence3: Goodbye. Sentence4: thank you good bye Sentence5: Yes, I'd like a restaurant that serves portuguese food. Sentence6: nandos is the only restaurant i can find in the south that serves portuguese. Sentence7: Hi. I'm trying to find a good restaurant in the south part of town. Sentence8: There are several good restaurants in the south part of town. Do you have a preference for the type of food or price range? Question: Who has spoken the sentence 2? (A) User (B) System

SOLUTION: Answer: (A) User

PROBLEM: Sentence1: Thank you very much, you too. Sentence2: Your are very welcome! Enjoy your stay here. Sentence3: How about italian food? Sentence4: Yes, I also need a place to stay, free parking is not required, I would prefer a 0 star rating. Sentence5: That won't be necessary. I need the price range and postcode. Sentence6: I'm sorry I have no results for a scottish restaurant in the centre area. Is there another type of cuisine you'd like to try for? Sentence7: Are there any good Scottish restaurants in the centre? Sentence8: My favorite is Stazione. It's an expensive place located in postcode cb23nj. Their phone number is 01223352607. Can I help you with anything else today? Sentence9: I have several in the area, is there a price range you prefer? Sentence10: Cityroomz is a 0 star hotel in the centre with no parking available. It is moderately priced. Would you like me to make a reservation for you? Sentence11: Thanks for all your help. Goodbye! Sentence12: Thank you for contacting Cambridge TownInfo Centre, have a great day! Sentence13: Cityroomz is a moderate priced offering and the postcode is cb12tz. Is there anything else I can help you with today? Sentence14: It doesn't matter. I need to know what the price range is though, postcode and phone number too please Sentence15: You're welcome, have a nice day. Sentence16: No, everything I asked of you has been met. Thank you. Sentence17: Is this hotel in the same area as the restaurant? Sentence18: Yes they are both located in the centre. Would you like a reservation? Question: Who has spoken the sentence 9? (A) User (B) System

SOLUTION:
Answer: (B) System