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: Free is perfect. That will leave me extra to book a taxi from my hotel. Sentence2: You are most welcome! Sentence3: Great! Thank you so very much! Sentence4: It is a black volkswagen. The number is 07563800570. It will be there at 14:00 to take you to milton county park Sentence5: No specific area, but I would like a guesthouse type of hotel. Sentence6: Sure! Can I have the address and the area it's located in? Sentence7: I would love to locate a hotel that includes wifi and parking in its prices. Sentence8: I can book your taxi for you if you would like, would you care to go ahead and book one? Sentence9: There are several hotels that have wifi and parking. Is there an area of town you prefer? Sentence10: You're welcome. Enjoy your trip! Sentence11: Sure! milton country park is at cb46az. It's free admission . Sentence12: There are 21 hotels that match your criteria. Might I recommend the Acorn Guest House? It is a moderately priced 4-star guesthouse in the north. Sentence13: Okay great. Thank you so much. Sentence14: I am also looking for a park to visit, can I get the postcode of one? Sentence15: I need the taxi to commute and I have to leave the hotel by 14:00, can I get their contact number and car type please. Sentence16: The Acorn Guesthouse is located at 154 chesterton road, cb41da. It is located in the north part of town. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System