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: Can you tell me some colleges that I could go to in town? Sentence2: Okay. There are four museums in that area. I recommend the Cambridge Artworks. It is free admission. Sentence3: I need reservations for 2 people at 13:30 on saturday. Sentence4: That sounds nice can I please get a postcode, entrance fee, and phone number. Sentence5: Have a nice day. Sentence6: I'm looking on the east side of town. Sentence7: Ok, how about a museum in the east? Sentence8: Sure! Booking was successful and your reference number is PMI1IGTJ . Sentence9: Sure, what specific area of town are you interested in? Sentence10: Okay, The Copper Kettle is located on 4 Kings Parade in the city centre. Would you like me to make a reservation for you? Sentence11: I would also like to book a taxi to commute between the two places. Sentence12: I am looking for a restaurant called The Copper Kettle. Sentence13: Thank you no that will be all! Sentence14: The phone number is 0122390268, postcode is cb13ef and there is no fee. May I help you with anything else? Sentence15: Your taxi is booked! You will be picked up in a black tesla and their contact number is 07542406962. Is there anything else I can help with? Sentence16: I am sorry, but I have not found any colleges in the specific area you requested. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System