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 British food? Sentence2: The booking was successful. Your table will be reserved for 15 minutes. Your reference number is 6S09L48Q . Can I help you with anything else? Sentence3: Yes, please. I would like it to be for 4 people at 14:15 on Saturday. Sentence4: No. that is all for now. Sentence5: Can I get their postcode please? I also am looking for a good restaurant in town. Sentence6: Can you let me know the type of car? Sentence7: I also need a taxi between the two locations and need to get to the restaurant by 14:15 Sentence8: Fitzbillies is a great British restaurant in the centre of town. Would you like me to reserve a table for you? Sentence9: Wonderful, glad I could be of assistance. Have a great day! Sentence10: What kind of cool attractions to we have in town? Maybe in the water. Sentence11: The abbey pool and astroturf pitch is located in the East at pool way, whitehill road, off newmarket road. Their phone number is 01223902088. Would you like to know anything else? Sentence12: I am actually looking for a boat attraction in the north, not a swimming pool. Sentence13: Their postcode is cb43ax. Can I help you with anything else? Sentence14: It'll be a white tesla. Is there anything else I can help you with? Sentence15: Sorry, no matches. Is there another food you want to try? Sentence16: I have 4 swimming pools in town if you are interested in that? I have 2 in the north, 1 in the east, and 1 in the centre. Sentence17: I would like to the information for the one east. Sentence18: There are 5 British restaurants that meet your needs. Would you prefer the centre, west, or east part of town? Sentence19: riverboat georgina is in the north. do you want their information? Sentence20: Anywhere that you recommend will be great. Sentence21: Yes I would like to find a restaurant that serves German food that is expensive. Sentence22: I've booked a taxi for you. You should arrive at the restaurant by 14:15. The contact number is 07165032687. How else can I help you today? Question: Who has spoken the sentence 19? (A) User (B) System
Output: 


Answer: (B) System