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: Booking was successful. The table will be reserved for 15 minutes. Reference number is : H17X6OU3 . anything else? Sentence2: I need a table for 1 on tuesday at 14:45. Sentence3: How about British food? Sentence4: Unfortunately, we do not have any restaurants in town that offer halal food. Is there another type of cuisine you would be interested in? Sentence5: yes please book me a table thank you Sentence6: Restaurant one seven is a good place. Would you like me to book a table? Sentence7: I recommend the Lynn Strover Gallery, it has free admission. Would you like more information? Sentence8: Would you be able to tell me where to find a moderately priced, Halal restaurant? Sentence9: no thanks Sentence10: What day and time would you like to book and for how many people? Sentence11: Phone number is 01223295264. And the address is 23 high street, fen ditton. Is there anything else I can help you with today? Sentence12: How about a museum? Sentence13: i don't care about the location. which one would you recommend? Sentence14: I hope I've been helpful. Thank you for using the Cambridge TownInfo centre. Have a great day Sentence15: Are there any good architecture places in the west? Sentence16: I'd like the phone number and address, please. Sentence17: I am sorry there are no architecture attractions in the west. Would you like to try a different area or type of attraction? Sentence18: We do have five moderately priced British restaurants, such as the Oak Bistro in the city center. Does location matter? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System