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: Can I have the postcode, please? Sentence2: What is the address? Sentence3: There are 2 modern European restaurants. Sentence4: Can you help me find a museum to visit? Sentence5: great! I also want to book a taxi from the cambridge and county folk museum going to Riverside Brasseri by 18:30. Sentence6: Your booking is complete. Can I help you with anything else? Sentence7: I'd be happy to give that to you again. Car type is a Blue Lexus, contact number is 07998934356. Can I assist you further? Sentence8: What adult attraction are within 5 miles of the restaurant? Sentence9: Thanks much! Oh and I'd also like to find a place to dine in the centre. Can you help me with that too? Sentence10: i am glad i was of help Sentence11: Riverside Brasseri, located at Doubletree by Hilton Cambridge Granta Place Mill Lane. Will there be anything else? Sentence12: Ok great, your booking is completed. Car type is a Blue Lexus, contact number is 07998934356. Sentence13: I have none that match your criteria. May I suggest a different area or food type? Sentence14: No, it does not matter. You can make a suggestion and provide the address and postcode. Sentence15: I'd like modern American in the moderate price range, if possible? Sentence16: cambridge and county folk museum located at 2-3 Castle street. 3.50 pounds to get in, but well worth it.Check out the gift shop too. Sentence17: Thank you for calling today. Please feel free to reach out if you need anything else. Goodbye. Sentence18: I was never given the car type and contact number for my taxi, could you please provide them? Sentence19: I can. Does location matter? Sentence20: If you don't have any Modern American places, maybe Modern European? Sentence21: I have ballare nightclub very close in the same area. Sentence22: NO that was all I needed. THank you, Sentence23: The postcode is at cb30aq Sentence24: Can you reserve it for me? Sentence25: Sure thing here you go 01223259988 and cb21rt. Sentence26: Absolutely. What sort of cuisine would you like? Sentence27: thank you for choosing us Sentence28: Could you pick one and give me the postcode and phone number? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User