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: i am sorry. i have double checked and still do not find anything matching your criteria. would you like a different star rating? Sentence2: I can help with that. What kind of price range do you have in mind? Sentence3: there are a variety of good things in the north it depends on what you want i will find whatever you request Sentence4: There doesn't appear to be a 4 star hotel with wifi in the north. Can I interest you in a lower star rating? Sentence5: i need a hotel with wifi in the north part of town Sentence6: Perhaps there is a guestroom? Sentence7: No but would you like to try another location ? Sentence8: No, the hotel needs to have a 4 star rating. Can you please check your system again? Thanks Sentence9: I am open as far as price range, but I would love a 4 star place. Sentence10: No I need the north. Is there anything else available in the north? Question: Who has spoken the sentence 3? (A) User (B) System

SOLUTION: Answer: (B) System

PROBLEM: Sentence1: Great. I booked six tickets on TR4095 departing at 11:35 and arriving in cambridge at 11:52. Your confirmation number is W6PWPYOP . Sentence2: I need to book a train for Monday from Ely to Cambridge to arrive by 14:00 for 6 people. Sentence3: What time would you like to leave by? Sentence4: That is all I needed, good day to you. Sentence5: Anytime as long as i arrive by 14:00. Can you provide me with a reference number after booking? Sentence6: Have a great day! Question: Who has spoken the sentence 1? (A) User (B) System

SOLUTION: Answer: (B) System

PROBLEM: Sentence1: I will be departing from Leicester. Sentence2: Thank you, and have a pleasant trip. Goodbye. Sentence3: Sure. The TR8292 departs at 13:09. The ride is 105 minutes long. Do you have any other questions? Sentence4: I don't actually need to book at the moment. I just need to know the departure time and travel time for this train, if you don't mind. Sentence5: I am going to cambridge Sentence6: TR 8292 arrives in Cambridge at 14:54 on Wednesday. It costs 37.80 pounds. How many tickets can I book for you? Sentence7: No, that's all for today. Goodbye! Sentence8: As long as i arrive close to 16:00 I am good. Sentence9: There are trains arriving in Cambridge 6 minutes before the hour throughout the day. Which time would be best for you? Sentence10: Where are you departing from? Sentence11: What will be your destination? Sentence12: I'm going to need a train on Wednesday. I need to arrive by 16:00. Question: Who has spoken the sentence 3? (A) User (B) System

SOLUTION:
Answer: (B) System