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: No thank you. That is all I need. Sentence2: What's the price range of that one? Sentence3: I have a white Lexus picking you up from the hotel and will arrive at the restaurant by 24:00. The contact number is 07675725181. Can I assist with anything else? Sentence4: just find me the phone number and postcode i'll book it myself Sentence5: This one is cheap, will that work? Sentence6: I can't book a reservation for your hotel until you tell me how many people will be staying. Sentence7: No but I still need the reservation for the hotel and a taxi to arrive at the restaurant by 24:00. Need contact number and car type for that as well. Sentence8: I'm interested in 4 star hotels in the centre of town. Sentence9: How about the cheap price range? Sentence10: I would prefer a hotel in the moderate price range. Sentence11: Alexander bed and breakfast is in the cheap price range in the centre area. Would you like to make a reservation? Sentence12: how about charlie chan? i have heard great things Sentence13: You're welcome! Have a great day! Bye! Sentence14: When will you begin your stay and how long will you stay? Sentence15: Yes I need to book a taxi to travel between the two places. Sentence16: The postcode for the hotel is cb12de. The phone number is 01223525725. Can I assist with anything else? Sentence17: There are no four star hotels in a moderate price range in that area. Would you like me to search for a different area of town? Sentence18: I've located one 4 star hotel, University Arms Hotel located on Regent Street. It is an expensive hotel, but has internet and parking. Would you like to book a room? Sentence19: Beginning on Wednesday for three nights. I also need a restaurant in the same area as the hotel that serves Chinese food. Sentence20: That would work yes, can I have their phone number and postcode? Sentence21: Yes, I would like a reservation. Sentence22: Of course, the phone number is 01223361763 and the postcode is cb21db. Would you like me to book you a table? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User