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: Your booking was successful. Your table will be reserved for 15 minutes. The reference number is 0MRW9QAM . Sentence2: Can you please make a reservation for me? It needs to be for 3 people at 14:45 on Friday. Sentence3: Tell me where your departure and destination sites will be. Sentence4: Is there anything else I can assist you with today? Sentence5: We are wanting to save money for the rest of the sights in town, so let's go with the cheaper one. Can you tell me about it? Sentence6: Sweet, that's all I need today. Sentence7: What is the address and postcode of the park? Sentence8: Thank you very much. Sentence9: Yeah, I also wanted to find a park to visit in the north. Sentence10: milton country park is in the north and it is free to visit. Sentence11: I am showing 2. The nirala which is moderate priced and the royal spice which is cheap. Would you like to book one of them? Sentence12: Milton country park is located at milton country park, milton, postcode cb46az, phone 01223420060. Is there anything else you need today? Sentence13: Sure, the Royal Spice is located on Victoria Avenue, Chesteron and the post code is cb41eh. Sentence14: I need a taxi from the park going to the restaurant. I'd like to arrive before my dinner reservation, if at all possible. Sentence15: Can I help you with anything else? Sentence16: I also need a taxi between the two. Sentence17: That's great thank you! Sentence18: Wonderful! Thanks for contacting the cambridge towninfo centre and take care! Sentence19: Booking completed! Booked car type : black audi Contact number : 07283412603 Sentence20: i am looking for a place to eat. The restaurant should be in the north and should serve indian food. Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User