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 get the phone number and address for University Arms please? Sentence2: no worries, i can give you three options to choose from Sentence3: Alexander Bed and Breakfast guesthouse (cheap) and University Arms Hotel(expensive) are both available in that area and are 4 stars with parking. Sentence4: How about lebanese food? Sentence5: Yes that sounds great. Please book me a table for 5 at 20:00 on Monday. Sentence6: I'm sorry, you must have misunderstood. Would you like me to book Alexander or University Arms for your stay? Sentence7: I'm sorry, there aren't any restaurants like that. Would you like to try searching for something else? Sentence8: Yes, the centre of town please. Also, no internet is needed, but i would prefer free parking. Sentence9: Thanks, I also need to find a restaurant with modern eclectic food in Centre. Sentence10: We've got 33 four star hotels in the area. Is there any particular part of town you'd like to limit it to? Sentence11: You're welcome. Enjoy your day. Sentence12: It is in the expensive price range, and the address is regent street postcode cb21ad. You can call them at 0122335124. Could I help you with anything else? Sentence13: I need a place to stay that has 4 stars. Sentence14: No I just need the price range, address and phone please. Sentence15: Sure, the phone number is 01223351241 and the address is regent street. Would you like to book a room? Sentence16: Thank you, that is all I need. Have a good day. Sentence17: Booking was successful. The table will be reserved for 15 minutes. Reference number is : 66Y5KK37 . Sentence18: Ali Baba is a Lebanese restaurant in the centre. It's moderately priced. Will that work for you? Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User