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 apologize for all this confusion the type of lodging doesn't matter. I would like it to have free parking, be 4 star, moderately priced, and the area doesn't matter. Sentence2: I do have some guesthouses, but no hotels. Would you like reservations at one? Sentence3: I really would like a hotel not a guesthouse, can you please search again - open to all areas. Sentence4: Of course I can help you with that. What day will be arriving and for how many days will you be staying? Sentence5: I'm sorry there are no moderately priced hotels in the centre of town with free parking. Would you like me to check a different area or price range? Sentence6: Okay and what area would you like to stay in? Sentence7: I apologize, but the are no hotels available that meet the following criteria: free parking, moderate price range, 4-stars. Would you like me to change the search criteria? Sentence8: I found 29 places matching that criteria. Do you have a particular area you would like to stay in or a price range you would like to stick to? Sentence9: I have 9 guesthouses that meet your criteria. Is there an area you are interested in? Sentence10: I'd like to stick to a moderate price range. Sentence11: There is no certain area but I'd prefer a hotel. Sentence12: Okay, no problem! I recommend the Acorn Guest House. It has everything you're looking for. Sentence13: I would like to stay in town centr Sentence14: Great, can you please book it for me? There will be 7 of us staying Sentence15: I'm sorry but you will have to change some of your criteria if you would like me to find you something or accept a guest house. Sentence16: Can you double check for a 4 star hotel in the moderate price range with free parking? Sentence17: No that is all thank you very much Sentence18: I will be arriving on Tuesday and staying for two days please. Sentence19: Actually, the area doesn't matter. I just need a 4-star hotel in the moderate price range. Sentence20: Booking was successful. Reference number is : AKH4MCWD . Anything else I can help you with? Sentence21: Can you help me find a place to stay with free parking? Sentence22: You are welcome! Please don't hesitate to reach out if you need anything further, and until then goodbye! Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System