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: Thank you for confirming that. One more detail: Did you have a particular time period in mind for your trip? Sentence2: I would like to travel on a Saturday. Sentence3: Yes. I want to arrive in Cambridge by 21:30. Sentence4: The Ruskin Gallery is a museum. Do you need anything else? Sentence5: There are numerous places in the Centre, can you tell me what type if place or activity you would like to do and maybe we can narrow it down? Sentence6: The Cambridge University Botanic Gardens are 4 pounds, and the Regency and Ruskin Galleries are free. Sentence7: The address for the regency gallery is 39 fitzroy street and the phone number is 01223365454. For ruskin gallery it's anglia ruskin university, east road, their number is 01245493131. Sentence8: I am looking for a train leaving broxbourne. Sentence9: The centre, please. Sentence10: I should have confirmed that I am indeed going to Cambridge. Sentence11: I need a place to go in town. Sentence12: I'm afraid we don't have a zoo, although if you like plants there is the Cambridge University Botanic Gardens. There are several galleries, such as Regency Gallery and Ruskin Gallery. Sentence13: You are welcome. Have a nice day. Goodbye. Sentence14: That will be all, thank you for your help. Sentence15: No I don't need to book a seat, but can you tell me the departure time. Sentence16: Please, I need the address and phone number for the Regency and Ruskin Galleries. Thanks. Sentence17: TR7846 will get you into Cambridge by 10:32. Would you like me to book a seat on that for you? Sentence18: I can help with that! Your destination will be cambridge I presume, what day would you like to travel? Sentence19: Yes I want to travel on a Saturday. Sentence20: Of course. The departure time for that train is 09:32 with an arrival time of 10:32. It's a 60 minute ride. Anything else I can help with? Sentence21: How about a zoo or art gallery? Sentence22: Where is your destination located? Sentence23: Are there entrance fees to these places? Sentence24: One more thing. Would you confirm the attraction type for the regency gallery and ruskin gallery? Sentence25: There are hourly trains from 5:32 onward. Did you have a particular time of day in mind? Sentence26: Did you have a specific place or area in mind? Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System