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: I was wondering the price range of the riverside brasserie. Sentence2: I have 4 modern european restaurants in the center of town. I recommend the Riverside Brasserie. Sentence3: What is the postcode of that resturant? Sentence4: You're welcome. Have a great trip! Sentence5: The phone number for Riverside Brasserie is 01223259988. Can I help you with anything else? Sentence6: It looks like there are none. Is there another area or type of food you'd like to look for? Sentence7: TR7850 leaves at 11:17, can book some seats for you? Also, the postcode for Riverside Brasserie is cb21rt. I had forgotten to give you that information. Sentence8: The Riverside Brasserie is moderately priced. Sentence9: Booking was successful, the total fee is 118 GBP payable at the station . Reference number is : 1JO707L5 . Will you need anything else? Sentence10: Hi, are there any modern global restaurants in the centre? Sentence11: Thanks. Could you check on a train for me from london kings cross? Sentence12: Sure, when would you like to leave by? Sentence13: I would like to leave after 11:15 on a Tuesday. Sentence14: I would like to look for one that serves modern european food please. Sentence15: Yes I'd like to book that train for 5 and I'd like the reference number as well please. Sentence16: I think that will be all for today. Thank you. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User