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: Absolutely. Their address is Milton Country Park, Milton. Is there anything more I can help you with? Sentence2: Great, there is a cheap Italian place in the north part of town called Da Vinci Pizzeria. Would you like a reservation? Sentence3: There are five cheap italian restaurants in town. Is there a particular area you prefer? Sentence4: Sounds good. Could you also help me find a cinema in the same area? Sentence5: Can I get their address please? Sentence6: what is the entrance fee? Sentence7: Yes, please make one for 7 people at 17:45 on Thursday. Sentence8: Hi, I'd like to find a cheap italian restaurant, please. Sentence9: Their fee is free. Is there anything else I can help you with? Sentence10: I have booked your ride, it's a yellow tesla and the contact number is 07623087287. Sentence11: I have your table reserved at the requested day and time. It will be held 15 minutes for you. The reference number is: UB24W3TP . Sentence12: I prefer the north area of town. Sentence13: Yes, there is Milton Country Park in the north. It is free to enter. Sentence14: I'd also like a taxi. I'd like to arrive to the restaurant by the booked time, please. Sentence15: I'm sorry. There are no cinemas in that part of town. Would you like to try a different type of attraction? Sentence16: Thank you for contacting Cambridge TownInfo centre. Goodbye! Sentence17: Thank you, you've been very helpful! That's all I'll need today! Sentence18: Darn! I really wanted to go to the cinema. Is there a park located in that area? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User