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: What about the Gonville Hotel? It is an expensive hotel in the centre of town. Sentence2: Actually, I need it to be a hotel, not a bed and breakfast. Sentence3: Hotel Du Vin and Bistro serves European food and is moderately priced. Does this sound good to you? Sentence4: No. I just need it to be for three people, for three nights. Sentence5: What kind of moderately-priced restaurants are there in the center of town, then? Sentence6: It has been my pleasure. Have a nice day. Sentence7: The car is a black audi and the contact number is 07306125704. Is there anything else I can help you with today? Sentence8: No, I think that's all. You have been very helpful. Sentence9: We've got 21 moderately-priced restaurants in the centre. There are Asian Oriental, British, Chinese, European, Gastropub, International, Italian, Lebanese, Modern European, Spanish, and Turkish options. Do any of those interest you? Sentence10: Your booking is complete, reference number is AEDKGYBD . Anything else I can help you with? Sentence11: Yes please, could you find a hotel that offers free wifi in the same part of town as the restaurant? Sentence12: I am looking for a restaurant in Cambridge that serves south indian food. Sentence13: I am showing a total of five results that match your criteria. May I suggest the four star Alexander Bed and Breakfast, located at 56 Saint Barnabas Road? Sentence14: No thanks. How about a moderately priced modern European restaurant? Sentence15: Could I please get the car type and contact number of the taxi? Sentence16: I'm also looking for a taxi that arrives at the booked time of the restaurant. Sentence17: Good. I would like to try Asian Oriental then. Sentence18: The Yippee noodle bar meets your criteria. Would you like me to book that for you? Sentence19: Alright, I have a cab booked for you from the Gonville Hotel arriving at Hotel Du Vin and Bistro by 15:15. Anything else I can do for you? Sentence20: Sure thing! Your table is booked, and your reference number is SQ8N4IJX . Is there anything else I can assist you with today? Sentence21: I am sorry there are no restaurants in the are that match that description. Sentence22: There are 5 options that fit your criteria. Do you have a price range in mind or any other specifications? Sentence23: That sounds good can you book it for 3 nights for 3 people on saturday? Sentence24: Yes, thank you. Will you please make a reservation at the restaurant for 3 people on Saturday at 15:15 and provide me with the reference number? Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System