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 reference number is 1RIY72MY . Sentence2: great, that's all i need thanks Sentence3: I have 3 options available with free wifi in the centre of town. What is the price you are looking for? I have expensive to moderate available. Sentence4: friday if possible. let me get reference number Sentence5: Not even in the centre of town? Sentence6: Yes, that would be great. I'll need it for Friday, 3 nights, and 3 people, please? Sentence7: Sure. The address and phone number for La Mimosa is Thompsons Lane Fen Ditton/01223362525 and for Shiraz restaurant it is 84 Regent Street City Centre/01223307581. Sentence8: You're very welcome. Will you be needing a taxi? Sentence9: If you need any further assistance, please contact us. Sentence10: No but what is the address and phone number? Sentence11: The University Arms Hotel is in the centre and expensive, with WiFi. Would you like me to book that for you? Sentence12: Same price range as the restaurant please. Sentence13: Thanks. I also need to get a hotel with free wifi. Sentence14: No, my friends have a car. Sentence15: Which days would you like to stay? Sentence16: Sure, let's try Mediterranean, please? Sentence17: Sorry, not even in Centre. Is there a different type of cuisine you would like to try? Sentence18: No, I'm sorry there aren't any. Sentence19: shiraz restaurant and la mimosa are both in the center and seem to match your needs. Do you need a reservation? Sentence20: Can you let me know if Cambridge has any restaurants that serve Australian cuisine and are priced expensively? Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User