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: Yes sure. For how long will you be staying? Sentence2: Yes, there are three. The Ashley Hotel is moderately priced and located in the north. Sentence3: Thanks! I'd also like to book a taxi that leaves the restaurant by 17:30. Sentence4: Thank you for using our system! Sentence5: Yes, expensive, wifi, four stars. Sentence6: I need wifi and four stars as well. Sentence7: Are there any moderately priced hotels in Cambridge? I'm looking for a hotel, not a guesthouse. Sentence8: OK. This restaurant is an expensive, modern European establishment in the centre of town. It is located on King Street City Centre. Sentence9: I'm sorry, but there are no hotels in the cambridge area fitting all these all these qualifications. Would you like to alter your requirements? Sentence10: It doesn't appear that the Ashley Hotel has all these qualifications. Would you like me to search for another hotel in the same area? Sentence11: I also am looking for darrys cookhouse and wine shop. Sentence12: Thank you so much! Goodbye! Sentence13: What will your destination be? Sentence14: We will stay 4 nights. Sentence15: I found huntingdon marriott hotel in the west, and university arms hotel in the centre. Sentence16: Could you reserve us a room at the University Arms then? There are 3 of us and we'll arrive on Friday. Sentence17: I want a taxi back to my hotel. Please provide me a contact number and the car type. Sentence18: Your car is Booked. It is a blue volkswagen and their contact number is 07511504303 Sentence19: Could you try an expensive hotel instead of a moderately priced one? Sentence20: Yes their address is 40270 King Street City Centre and their postcode is cb11ln. Sentence21: I have made the reservation for 3 people for 4 days at the university arms hotel. Your reference number is 7ARCQZH9 . Sentence22: Can you provide their address, including postcode? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System