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 would recommend the Ugly Duckling restaurant. Would you like a reservation? Sentence2: What day will you be checking in? Sentence3: I'm looking for an expensive Chinese restaurant. Sentence4: Yes please book for 1 night 1 person. I also need a taxi to go from the hotel by 14:15 to the restaurant. What is the car & contact number? Sentence5: I have made that taxi and you should expect a red lexus. The contact number for the taxi is 07465471381. Sentence6: I'd recommend the University Arms Hotel, it's an expensive 4 star hotel in the centre. Can I book a reservation for you? Sentence7: No, I do need wifi though. Sentence8: There is no preference. Sentence9: Great, I have several options for you. Two are in the south. Sentence10: Area does not matter. Pick one for me. Sentence11: Unfortunately, to book you a room I would need to know the day you want to start your stay. What day would that be? Then we can get a taxi. Sentence12: Can I just get the address for now? Sentence13: You know what I change my mind. I'll book later. I still need a taxi from University Arms Hotel leaving at 14:15 to the Ugly Duckling. Sentence14: Their address is12 St. Johns Street City Centre. Was there anything else you needed to know? Sentence15: your welcome, have a great day! Sentence16: I have 3 that match your criteria, is there an area you are looking to stay in? Sentence17: thank you I think that will be all for today. Sentence18: I'm also lso looking for a place to stay. The hotel should include free parking and should have a star of 4. Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System