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 chinese food? Sentence2: Ok, which direction and what time? Sentence3: There are lots of museums in the centre. Did you have a particular one in mind? Sentence4: Yes, thanks. I am looking for a museum in the centre of town. What would you recommend? Sentence5: Booking completed! Booked car type : black audi Contact number : 07792008199 Can I help you with anything else today? Sentence6: I'd like to get some additional information on this museum. May I have the phone number and postcode, please? Sentence7: I can certainly help you with that. What area of town would you like to stay in? Sentence8: I would also like to book a taxi traveling between the two location. Sentence9: No. Just pick one. I need a table for 4 at 16:30 on Thursday. I need the reference number. Also, I need a museum in the centre. Sentence10: Sure I personally like the primavera. Sentence11: I've booked a table for you at Ugly Duckling located at 12 St. Johns Street City Centre. Your reference number is 5VYTXWH4 . Can I help you with anything else? Sentence12: Okay, have a great day. Sentence13: There are none, can I find you find you anything else? Sentence14: There are several options for chinese food. Is there a particular area that you would prefer? Sentence15: No is there one you could recommend? Sentence16: I need 3 rooms for nights in a cheap hotel Sentence17: I'm actually looking for an expensive north African restaurant. Sentence18: No. Thanks. All set. Sentence19: i want it to go to my restaurant by 16:30 Sentence20: The phone number is 01223357708 and the postcode is cb21sj. May I help with something else? Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System