Definition: You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Positive Example 1 -
Input: Sentence1:i need a place to dine in the center thats expensive Sentence2: I have several options for you; do you prefer African, Asian, or British food? Sentence3: Any sort of food would be fine, as long as it is a bit expensive. Could I get the phone number for your recommendation?Question: Who has spoken the sentence 2? (A) User (B) System
Output: Answer: (A) User

Positive Example 2 -
Input: Sentence1: Guten Tag, I am staying overnight in Cambridge and need a place to sleep. I need free parking and internet. Sentence2: I have 4 different options for you. I have two cheaper guesthouses and two expensive hotels. Do you have a preference? Sentence3: No, but I'd really like to be on the south end of the city. Do any of those fit the bill? Sentence4: Sure. Does price matter? We can narrow it down and find exactly what you need. Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (B) System

Negative Example 1 -
Input: Sentence1: I am looking for a hotel named alyesbray lodge guest house. Sentence2: i have their info, what would you like to know? Sentence3: I would like to book a reservation for it. Can you help me with that? Sentence4: I sure can. First, I will need to know when you want your stay to begin and how many days you'll be staying. Also, how many people will be staying? Question: Who has spoken the sentence 1? (A) User (B) System
Output: Answer: (A) User

Negative Example 2 -
Input: Sentence1: Hi there! Can you give me some info on Cityroomz?. Sentence2: Cityroomz is located at Sleeperz Hotel, Station Road in the Centre area. It is a moderatley priced hotel with a 0 star rating. Would you like to book a room? Sentence3: Yes please. I need it for 7 people for 3 nights starting on tuesday. Sentence4: How many days would you like to book it for? Question: Who has spoken the sentence 4? (A) User (B) System
Output: Answer: (A) User

Now complete the following example -
Input: Sentence1: Unfortunately there are no rooms available, do you have a different day or shorter stay? Sentence2: It is a yellow Honda. Is there anything else I can help you out with? Sentence3: Cityroomz aligns with your criteria. Shall I book that for you? Sentence4: I have booked the table for you; it will be reserved for 15 minutes. The reference numbers is T0R20O9D . Sentence5: That's it. Thank you very much for the help! Sentence6: I'm looking for the same price range as the hotel and in the same area as the Hotel Sentence7: Thanks! Is there any way you could book me a taxi between destinations? It needs to arrive by the booked time and please send me the contact number and car type. Sentence8: There are 15 Italian restaurants in town. Is there a particular area or price range you'd prefer? Sentence9: What is the car type of that taxi? Sentence10: Farewell, and have a beautiful day! Sentence11: I'd like one in the moderate price range than includes free wifi. Sentence12: Yes, you're all set for 2 nights at cityroomz on Sunday for your party of 3. Your reference number is L8OVTI18 . What else can I do for you? Sentence13: Will I be able to stay for 2 nights? Sentence14: Hello, I would like to know what hotels are in the town centre. Sentence15: You are welcome. Please let us know if you need help with anything else. Have a great day! Sentence16: Yes please. I want to book it for 3 people for 5 nights starting on Sunday. Sentence17: Pizza Express is moderately priced and located in the centre area, does that sound ok? Sentence18: No problem it is booked the contact number is 07499208880 Sentence19: There are 5 hotels in the town center, ranging from cheap to expensive. Which would you like more information on? Sentence20: That's all I need, goodbye. Sentence21: I am also looking for a good place to dine, are there any italian restaurants? Sentence22: It does indeed. Can you book it for the same people and on the same day as my hotel arrival? 12:00 would be the perfect time for lunch! Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System