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'm looking for a Russian restaurant in the centre. Sentence2: No that will be everything I needed for today. Thank You! Sentence3: I would like the one closest to the alexander bed and breakfast please. Sentence4: The alexander bed and breakfast is available and in the cheap price range. Sentence5: You're welcome. Enjoy your stay in Cambridge. Sentence6: I'm sorry, but there are no Russian restaurants in all of Cambridge. Would you like to try a different type of cuisine? Sentence7: Great! I was able to book that for 4 people and your reference number is F6FSFJ75 . Anything else I can help you with? Sentence8: OK, book that for 4 people. We'll arrive monday and stay 4 nights. And can I have the reference number? Sentence9: The Gardenia is priced cheaply and its psot code is cb23ll. Sentence10: How about the gardenia? Sentence11: I am looking for a place to stay. Preferably a guesthouse with free parking included. Sentence12: Can you provide me with the price range for the Gardenia as well as the postcode? Sentence13: I would like the hotel to be expensive. Sentence14: How about a cheap one? Sentence15: We have 21 entries that match your search. Do you have any other preferences? Sentence16: Yes, I have found three restaurants matching your inquest. Sentence17: We don't have any expensive guesthouses. Would you like to try a hotel or a guesthouse in a different price range? Sentence18: Is there a Mediterranean restaurant in the centre? Sentence19: Thank you for the information Sentence20: Is there anything else I could assist you with? Would you like help making a reservation? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System