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'll be glad to find you a place, first is there an area or price range you recommend? Sentence2: give me the address and postcode. Sentence3: I have booked that taxi for you. Be expecting a grey Toyota. Should you need to contact the taxi company, you can call 07048450899. Sentence4: The price range doesn't matter. Sentence5: Thank you very much. I think that is all I need. Sentence6: Well what area are you interested in? Sentence7: I recommend Carolina Bed and Breakfast. It's located close to where you'll be dining and is moderately priced. Their address is 138 Perne Road and their phone number is 01223247015. Sentence8: Can you help me out with finding a restaurant that serves british food in the east? Sentence9: Have a nice day! Sentence10: Please book reservation for 2 people at 16:00 on Friday. Send me the reference number. Sentence11: I need a guesthouse, including free parking. It should have a 4 star rating on Friday. Can I get the phone number and address? Sentence12: I also need a taxi from the restaurant to the hotel, please. I need to leave the restaurant by 19:00. Sentence13: I have located the grafton hotel restaurant, would you like more info or a booking? Sentence14: Sure, the address is Grafton Hotel 619 Newmarket Road Fen Ditton and the post code is cb58pa. Can I do anything else for you today? Sentence15: Ok, I made your reservations. Your reference number is 23EKIUFO . Is there anything else I can help you with? Sentence16: yeah, i'm also looking for a place to stay. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User