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'm coming to visit Cambridge! I can't wait to see all of the local tourist attractions! Do you have any Mediterranean restaurants around there? Sentence2: That sounds perfect! Can I have the address and phone number? Sentence3: There are eight attractions in that area, is there a type of attraction you would prefer? Sentence4: Sure. The phone number is 01223464646 and the address is 14 King's Parade. Is there anything else I can help you with? Sentence5: I can recommend Byard Art museum. Admission is free. Sentence6: I will need the reference number. Also, I'm looking for places to go in the south. Sentence7: Um. How about 10:00? Sentence8: The reference number for your booking is AYK7PMNB . Is there any place in particular you wish to go? Sentence9: Thank you, please let me know if you have any more question. Sentence10: I don't know the city very well. Do you have any recommendations for attractions in the south? Sentence11: Yes, expensive. The food should serve eritrean food. British if that's not available. Sentence12: Yes, book the Shiraz for one at 11:00 on Monday, please. Sentence13: Oh yes we have at least three restaurants located in the city center that serve Mediterranean food. They vary in price range. Do you have a preference? Sentence14: That's all I need! Sentence15: A museum if you have it, otherwise I'll take what you have at the top of your list. Sentence16: There is La Mimosa and Shiraz restaurant that are both in the Centre and both expensive. Would you like me to book one of these for you? Sentence17: Your booking was successful for 10:00 on monday. Is there anything else I can assist you with today? Sentence18: Sorry they seem to be full. Could we try another time/ Question: Who has spoken the sentence 14? (A) User (B) System
Output: 


Answer: (A) User