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: Sorry, that doesn't really narrow it down, they all have plenty of open seats. Sentence2: It is free to get in. The postcode is cb12lj. Can I help you with anything else? Sentence3: Train TR3922 is leaving at 19:19 and arriving at 20:09. Booking was successful for 3 tickets, totaling 39.59 GBP. The Reference number is : WF0T26CV . Sentence4: Ok, there are 10 different trains, what time did you want to arrive by so we can narrow it down a bit. Sentence5: Hi, I am searching for a museum to attend in the centre of town. Sentence6: You are welcome, goodbye! Sentence7: There are 11 total museums in the centre of town. Would you prefer suggestions for art museums, history museums, science museums, galleries...? Sentence8: Yes I would like a good steak. Sentence9: That sounds good. What is the entrance fee if any, and it's postcode? Sentence10: I don't care of the type of museum. Sentence11: No thanks, I actually need a train. I'll be heading to cambridge from peterborough on Sunday. I need to leave after 19:15. Sentence12: I can help you find a fantastic steakhouse. Do you have a preference for the area of price range of the restaurant? Sentence13: I would like to book the train with the shortest travel time, if that narrows it down. I will also need the reference number. Sentence14: I have located Williams Art and Antiques located at Gwydir Street, no. 5 Dale's Brewery. Would you like to visit this museum or would you like another suggestion? Sentence15: Thank you very much. That was all I needed. Have a great day. Sentence16: Before that, I need a booking for 3 people. Does that narrow it down? Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User