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 do apologize there are no restaurants serving barbecue. Is there something else you might be interested in instead? Sentence2: You're welcome! Enjoy your stay. Sentence3: Are there any places that serve gastropub food? Sentence4: I am looking for an attraction in the centre of Cambridge. Sentence5: I was able to get a blue lexus and their number is 07087322851 Sentence6: I would also like to book a taxi that arrives by 12:45 to the restaurant. I would also like its contact number and car type. Sentence7: Sure! For 5 people at 13:45 on Sunday please. Thank you! Sentence8: There is the Whipple Museum of the History of Science located in the town centre, on free school lane. Is there any thing else I can help you with? Sentence9: The museum's post code is cb23rh. Sadly, there are no restaurants serving barbeque. Is there something else you might be interested in instead? Sentence10: There are several attractions in the town centre. Are you looking for a particular type? Sentence11: Alright, you're booked for 12:45. Your reference number is DXMY5V92 . Sentence12: I am also interested in a moderately priced place I can get barbeque. Sentence13: Yes, The Cow Pizza Kitchen and Bar is a moderately priced gastropub in the center of town. Would you like a table there? Sentence14: Perfect. Thank you very much for your help. Sentence15: They are not available for that time, is there another day and or time that you would like me to check? Sentence16: Sure, would 12:45 be available? Sentence17: Yes, please find any museums in the town centre. Sentence18: I need the postcode. Also, is there any place in town serving barbeque? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User