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: The Oak Bistro is my favorite. Do you need their information or can I reserve a table for you? Sentence2: Thank you! I'm also looking for a place to stay, ideally a 0 star in centre as well that includes free wifi. Can you help me with that? Sentence3: Yes, I can assist you with that. What time would you like to leave to the restaurant? Sentence4: Your room is booked for 3 nights at El Shaddai, reference number is XBYOBYV7 . Can I help you with anything else today? Sentence5: Yes, please recommend one. Sentence6: I would like to have British food. Does Yippee Noodle Bar offer British food? Sentence7: Alright, I have your taxi booked for you. It will get you to the bistro by 15:30. Your car will be a red Volkswagen. Do you need anything else? Sentence8: Yes I will need a taxi to drive between the hotel and restaurant. Can you help me with that as well? Sentence9: El Shaddai is a guesthouse that meets your needs, and Cityroomz is a hotel. Would you like to book a room at one of those? Sentence10: Just the contact number for the taxi, please. Sentence11: You are planning your trip in Cambridge. You are looking for a place to dine. The restaurant should be in the centre and should be in the moderate price range Sentence12: Please reserve it for 2 people at 15:30 on thursday and give me the reference number. Sentence13: Great. I have booked your table. The reference number is LU8KXXPR . Sentence14: Okay how about Yippee Noodle Bar? If you'd like I can book a table for you. Sentence15: The contact number is 07413487681. Enjoy your stay in Cambridge! Sentence16: No, Yippee Noodle Bar does not serve British food. However, there are four British restaurants in the area I could refer you to. Sentence17: Either would be fine, I guess whichever has available rooms for 2 on Thursday and we will be staying for 3 nights. Sentence18: I just needed to arrive at the restaurant by 15 :30 Question: Who has spoken the sentence 4? (A) User (B) System
Output: 


Answer: (A) User