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: You're very welcome. Have a great day! Sentence2: no. get me the address, area and post code. Sentence3: The only Thai restaurant available is Bangkok City. Would you like to book a table? Sentence4: May I suggest University Arms Hotel? It has free parking and internet. Would you like a reservation? Sentence5: Thank you. That is all I need. Sentence6: Ok, the university arms hotel is on regent street. Do you want me to place a booking for you? Sentence7: Thanks. I am also looking for a place to eat in that same area, same price range as well. Sentence8: I was thinking about thai food Sentence9: Great. That will work. Sentence10: Yes expensive price range and free parking Sentence11: Okay. I have booked you there and your reference number is ELTJLSVR . Sentence12: Sorry about that, the University Arms Hotel is in the centre area and is located on Regent Street, CB21AD. Sentence13: Sure, do you have any other preferences I can add to my search? Sentence14: My favorite expensive place in the center is The Cambridge Chop House. They serve British food, and it's fantastic. Sentence15: yes for 7 at 17:45 wednesday and the ref # too please Sentence16: I'm looking for a 4-star place to stay, it doesn't need to include internet. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User