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: Fantastic, there are 11 museums in the centre. Can I recommend the Fitzwilliam Museum, if you don't have a preference? Sentence2: Certainly. What time would you like to leave? Sentence3: It doesn't matter, at long as I arrive at the restaurant by 11:15. Sentence4: Thank you for all your help. Sentence5: Yes, could you make it for 11:15, and can you give me the reference number? Sentence6: Glad I could be of assistance. Sentence7: At what time would you like the taxi to arrive? Sentence8: No thank you, that will do for now! Thanks for helping me today! Sentence9: Unfortunately I don't see anything entertainment related in the centre of town. How about another area of the city? Sentence10: I'm looking for a restaurant that serves international food. Sentence11: I would like to find a moderately priced place and I need a reservation for 4 people at 12:15 on a Thursday. Sentence12: That's fine. I'd like to know about museums in the area instead. Sentence13: I am looking for some entertainment, do you know anywhere I could go in the centre of town? Sentence14: Alright, I have booked you a table for 11:15 at the varsity restaurant. Your reference number is HM90EAET . Is there anything else I can help you with? Sentence15: Actually it's from Fitzwilliam Museum to The Varsity Restaurant I want to arrive by the 11:15 booking please. Sentence16: Have a fantastic day! Sentence17: Great. Now can you book a taxi for me between the two places? From The Varsity Restaurant to Fitzwilliam Museum? Sentence18: The postcode is cb21rb. Sentence19: OK, a yellow Lexus will pick you up at the Varsity and get you to the Fitzwilliam by 11:15. The contact number is 07462272535. Can I help with anything else? Sentence20: Fitzwilliam Museum sounds great. What is the postcode? Sentence21: There are three international restaurants in Cambridge. Do you have a price preference? Sentence22: Okay I have the Bloomsbury and the Varsity restaurants. But I was unable to reserve either. Is there another time that would suit you? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User