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: Thank you for contacting the Cambridge TownInfo centre, have a great day! Sentence2: Excellent. What's the address and area there? Sentence3: Ok great. Your taxi booking has been completed. The care type will be a white tesla. Would you like the contact number? Sentence4: I have no preference. Can you please provide me with the address, postcode, and area on one? Sentence5: Yes, that sounds lovely. Thank you. Sentence6: I need to book a taxi to commute between the museum and the restaurant, leaving the museum by 14:30. Sentence7: The Fitzwilliam Museum, in the centre, has free admission. Trumpington St, cb21rb. Sentence8: I'm looking for a local restaurant to try in Cambridge. Sentence9: You're welcome. Is there anything else I can help you with? Sentence10: There are many! Is there a certain style of cuisine you are looking for, or a specific price range? Sentence11: Yes, on second thought I would like help finding a restaurant. What do you know about north american cuisine restaurants? Sentence12: Yes, please. That would be great. Sentence13: I think I can find a restaurant on my own, but can you tell me if there are any museums? Sentence14: There is one expensive North American restaurant in the centre of town. It is called the Gourmet Burger Kitchen. Sentence15: I have found 23 differnt museums in town. What part of town are you wanting to travel to? Sentence16: The number is 07555434856, is there anything else I can do for you? Sentence17: gourmet burger kitchen, in the centre is located at Regent Street City Centre Sentence18: No, that should be good, thank you. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User