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: I am looking for a mexican restaurant in south cambridge Sentence2: Nope, that's all I needed. Thanks for your help. Goodbye! Sentence3: Have a great day. Sentence4: Their address is 2G Cambridge Leisure Park Cherry Hinton Road Cherry Hinton Sentence5: That would be great, thank you. Sentence6: Yes. Actually can you make a booking for me? Sentence7: Do you have an expensive hotel that meets my other criteria? Sentence8: I can try to book it again. Sentence9: What day,number guests and time of day you would like to dine? Sentence10: Actually, can you just send me the address? Sentence11: Is the system back up now? Sentence12: There is a restaurant called Chiquito Restaurant Bar that is in the expensive price range. Do you want the address? Sentence13: There are several options that meet your criteria, what is your price range and what area are you looking for? Sentence14: I booked you at the gonville, your reference number is J782KUH9, anything else today? Sentence15: Sure. There are two. The Gonville Hotel, and The Lensfield Hotel. Would you like me to book one of those for you? Sentence16: Either of those sounds great. There will be 8 of us for 5 nights starting on Sunday. Can you book that, please? Sentence17: I am needing a place to stay with a star of 3 and free wifi please. Sentence18: Darn. Why don't we try booking it for tuesday instead then? Sentence19: I am unable to book either of those options. Is there anything else I can do for you? Sentence20: i need something cheap Sentence21: I don't have anything meeting that criteria. Can I try something else? Sentence22: I think the system is down, I am unable to make any bookings. Question: Who has spoken the sentence 11? (A) User (B) System
Output: 


Answer: (B) System