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: I do not have anything. Can I try something else? Sentence2: there is no restaurant in that side of town serving your kind of food. can we change the cuisine? Sentence3: Okay. Thank you for calling. Sentence4: Can you check for asian oriental? I don't care what area it is in. Sentence5: Great, I just need the area and postcode please. Sentence6: Can you check for ones with a cheap price range? Sentence7: I'm also looking for a place to dine. The restaurant should serve Asian oriental food and should be in the same price range as the hotel. Sentence8: I'm looking for a 4 star hotel in the east. Sentence9: My mistake. There are three cheap guesthouses. The Allenbell, Autumn House, and Leverton House all offer free parking. Would you like to make a booking? Sentence10: Pick the most popular one, I need their phone number as well and hotel type. If they have area and postal code , I will need it. Sentence11: I was able to book your taxi per your request. It will be a black tesla and the contact number is 07433186357. Is there anything else today? Sentence12: I would like a taxi going to dojo noodle bar. I want to leave my hotel (Leverton House) by 07:30. Sentence13: Yes, all three of the guesthouses have free internet and free parking. Is there one that you would prefer? Sentence14: Are you saying that there isn't even a cheap 4 star guesthouse on the east side? What kind of city is this? Sentence15: That is all for now. Thank you for all your help. Sentence16: The area is not important. I just need it to be asian oriental food and something cheap. Sentence17: It is located in the centre and the postcode is CB21RQ. Sentence18: I can recommend dojo noodle bar in the centre. Sentence19: With those requirements, I do have one hotel in the east. It is expensive 2 star rated with both free parking and wifi. It is the Express by Holiday Inn Cambridge. Sentence20: In that case, how about just a hotel in the east that has free parking? Sentence21: I dont have any in the east. can I check another location? Sentence22: There are no cheap four star hotels in the area. Another criteria maybe? Sentence23: I am sorry I have no cheap 4 star hotels, maybe a more realistic star rating? Sentence24: How about Chinese in the east? It should still be in the same price range as the hotel. Sentence25: Oh man, I can't do expensive. Is there a 4 star guesthouse that is cheap in the east perhaps? Sentence26: My system is not pulling up any 4 star hotels in East. Would you like to try a guesthouse or another area perhaps? Sentence27: Leverton House is lovely. It's a guesthouse in the centre of town. The phone number is 01223292094, and the postcode is cb58rs. Would you like me to book that? Sentence28: I think you need to pay more attention, it's your job to be alert. Do they all have free internet? Question: Who has spoken the sentence 20? (A) User (B) System
Output: 


Answer: (A) User