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: What is the entrance fee and postcode for that one? Sentence2: I don't have anything fitting that criteria. Do you have any other criteria I can check or another area? Sentence3: Could you try looking for something for Wednesday? Sentence4: Have a great day and thanks for contacting Cambridge TownInfo centre. Sentence5: Great! I'll also be needing a taxi. Will you book one that will leave the college at 5:45? I'd also like the car type and their contact number. Sentence6: There is a moderate priced guesthouse in the west area that is 3 star. Would that suit your needs? Sentence7: I am also hoping to check out some sports locations in the same area. Can you see what attractions are available in the west? Sentence8: You got it, I booked a red tesla for you. The contact number is 07757471475 Sentence9: Hello, I'm looking for a hotel to stay in during my visit to Cambridge. Can you please help me find something in the moderate price range? No specific amenities needed. Sentence10: I do not have anything fitting that. Do you have any other criteria I can check? Sentence11: If that is the case, can you look for a hotel that has free wifi? Thanks Sentence12: I'm sorry, there is nothing that matches your criteria. Are you sure I cannot check another area for you? Sentence13: There are five colleges in the west. I recommend churchill college. Sentence14: Thanks! That's all for me. Have a good day! Sentence15: I apologize we do not have any sport attractions in the west area. Would you like me to look in another area? Sentence16: Yes, please try to find something else. Sentence17: Entrance is free, and the postcode is cb30ds Sentence18: Can you look to see if there are colleges in that area? Sentence19: Are there any 3 star hotels in the West? Sentence20: I am sorry there are no 3 star moderately priced hotels. Sentence21: Hobsons house is booked for you. The reference number is JHQJLP4U . Sentence22: That sounds good. Can I get a room for 6 people, 2 nights, starting Thursday? Sentence23: That would be fine,can you book it for me? Sentence24: In the west. And 3 stars, please. Sentence25: Sure, are you staying in a certain part of town? Sentence26: I'm sorry, there really isn't anything in this area that meets your criteria. Perhaps a moderate in another area? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User