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: Kohinoor is in the centre and serves Indian food. Would you like me to make a reservation? Sentence2: That sounds good. Can you book me a table for 5 at 12 on Thursday? Sentence3: Let me think about that. Can you help me book a 4 star hotel? Sentence4: Sure! Bedouin is african food located in the centre. Would that do? Sentence5: May I recommend the gandhi in the centre? It fits your criteria. Sentence6: Let me think about that. What are some good local restaurants? Sentence7: Can you help me book a 1 star hotel that has free parking please? Sentence8: Arrival by the booked time at the restaurant. Sentence9: Yes. I'd like to reserve a table for 5 on Thursday at 12:00. Sentence10: What time would you like me to schedule the taxi for? Sentence11: Ok your all set! A yellow BMW will be picking you up a few minutes before your reservation at the restaurant. Contact number is 07785034458. Anything else? Sentence12: I'm sorry, they don't have tables available. Would you like to try another day or time? Sentence13: Yes I found 4 star hotel,do you want me to make reservation? Sentence14: I would like to get a taxi between the hotel and the restaurant. Sentence15: No that will be all thank you Sentence16: I'm sorry they are booked would you like to try another time? Sentence17: You're welcome. Have a great day. Sentence18: Is there another restaurant in the area? Sentence19: There are over 100 restaurants in the city. Do you have a certain type of food in mind? Sentence20: I am sorry there are no 1 star hotels in any area,can I get a price range and area please? Sentence21: Do they have internet access and can you tell me their price range and postcode? Sentence22: Yes, the University Arms Hotel has internet access. It is expensive, and its postcode is cb21ad. Would you like to book it? Sentence23: No, I don't. Surprise me! Sentence24: No, that's ok. I am also looking for a restaurant that serves indian food in the cheap price range. Sentence25: Are you sure there isn't an indian restaurant available on Thursday at 12:00 in the centre? Would you double check that for me again? Sentence26: I was able to book kohinoor, reference number is T8TBNX3R . Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User