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: ok, what's their address and postcode? Sentence2: I also need a taxi. Sentence3: How about the avalon? Sentence4: excellent, have a great day! Sentence5: Camboats address is The Plough, Green End, Fen Ditton and their postcode is cb58sx. Sentence6: Great, if they can book for 6 people for 5 nights, starting on Wednesday. Can you try that for me? Sentence7: That would be just fine, thank you. Sentence8: I want to leave by 15:30. Sentence9: I'd be happy to help with your request, first I'll need to know your departure site and destination and what time you're looking for. Sentence10: If you're going to the east, I recommend taking a boat ride with Camboats. Sentence11: It will be a blue Tesla. You may contact them at 07008080625. Sentence12: Any area will do. Recommend something. Sentence13: All the moderately priced, 4-star accommodations are guesthouses. Is that OK? Sentence14: Which are would you like? Sentence15: I need to know a departure and/or arrival time. Sentence16: Thank you! Are there any places to go in the east? Sentence17: Thank you very much. That is all that I need. Sentence18: Can I get the contact number and the car type please? Sentence19: What is the cost? Sentence20: I was able to complete that booking for you. Your confirmation number is O4E7TJ08 . Sentence21: I will want to go between the attraction, and the hotel. Sentence22: I am looking for a moderately priced 4 star hotel. Question: Who has spoken the sentence 20? (A) User (B) System
Output: 


Answer: (A) User