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 prefer something in the expensive price range. Sentence2: They are located at 17 Hills Road City Centre, their postcode is cb21nw, and phone number is 01223358899. Sentence3: Could you tell me your destination please? Sentence4: Yes, could you please provide the addresses and entrance fees for the churches in the center? Sentence5: I need to go to the sesame restaurant and bar. Sentence6: There are several beautiful churches in the center; are you willing to pay to enter? Sentence7: I am also looking for Chinese food in the city center. Can you help me find some restaurant options? Sentence8: I just need the address, postcode and telephone number for the restaurant at this time. Sentence9: You're welcome! Have a nice day. Goodbye. Sentence10: That will be everything I needed today. Thanks for your help! Sentence11: Would you happen to know of any attractions involving architecture in Cambridge? Sentence12: Okay, I've booked a car for you. It's a white Tesla. The contact number is 07746645374. What else can I do for you? Sentence13: Sure, All Saints Church on Jesus Lane and Holy Trinity Church on Market Street are free to enter. Great Saint Mary's church on Market Square is 2 pounds to enter. Sentence14: The Sesame Restaurant and Bar sounds perfect for you. Would you like me to reserve it? Sentence15: We have 10 Chinese restaurants in the centre area. What price range are you looking for? Sentence16: Can you help me look for a taxi that will leave All Saints Church by 17:45? Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System