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: That sounds perfect! Could you book me a table for friday at 18:00 for 8 people. Could you include the reference number also? Sentence2: How about the De Luca Cucina and Bar? They're in the centre with a moderate price range. Sentence3: I have booked your table. Your reference is ZNVPVZD5 . Is there anything else I can help you with? Sentence4: Yes, for 2 nights for 8 people starting on Friday. Sentence5: There are a total of 4 restaurants in the centre of Cambridge that serves modern european food. Is there a particular price range you would like? Sentence6: You are welcome, goodbye. Sentence7: That should be everything. Thank you for all of the assistance! Sentence8: I'm looking for a place to dine in the centre of town that serves modern european food. Sentence9: Not really, but I have 8 people with me. Sentence10: Yes, I also need a hotel, I am on a budget so if you could find a cheap one that would be great. Sentence11: There are 9 guesthouses and 1 hotel that is cheap. Do you have any other criteria such as area? Sentence12: I have booked you and your party for the Allenbell. Your reference number is TZ42QW4H . May I assist you with anything else? Sentence13: Not really, I don't need free parking or anything. What is available? Sentence14: I would recommend the Allenbell. Would you care to book a room there? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User