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: Done! Your table will be reserved for 15 minutes. Your reference number is BMZ45SHV . Can I help you with anything else? Sentence2: That is all I need, thank you for your help. Sentence3: We have wonderful British restaurants in the center of town! My favorite is The Cambridge Chop House, but it's a little expensive. Sentence4: Please find a restaurant that serves Latin American food. Sentence5: I have booked a white tesla for you. Contact number: 07825756363. Does that take care of everything for you today, or did you want more help? Sentence6: You're very welcome Let us know if you need anything else. Sentence7: There isn't, I'm sorry, could there be anything else? Sentence8: I'm sorry I couldn't find a Latin American restaurant is there another type of food you'd like? Sentence9: My computer is not showing anything regarding an entrance fee, I'm sorry about that. The address is Gonville Place, and the postcode is cb11ly. Anything else I can help you with? Sentence10: Sounds great. I want to book for 7 people on friday at 17:15. Sentence11: Oh no, my friend told me there was a really great British place in the centre. Can you double check? Sentence12: Is there a British restaurant in the center of town? Sentence13: Thanks, what is the address along with postcode? Also is there an entrance fee? Sentence14: That's alright. Can you book a taxi to take me from the pool to the restaurant in time for my reservation? And give me car type and contact number Sentence15: Parkside Pools is in that area. Their phone number is 01223446400. Sentence16: Thanks for the booking. Will you help me find an attraction in the centre near the restaurant? A swimmingpool would be ideal. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User