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: There are several nice expensive restaurants in the centre area. Is there a particular food type that interests you most? Sentence2: I am looking for a train that departs from Cambridge and leaves after 21:45. Sentence3: Thank you. That is all for now. Sentence4: How about the 22:40 train? It gets in at 23:08. Does that work? Sentence5: It is stansted airport. Sentence6: I am sorry none of the listings have tables available for that time, is there another time that will work? Sentence7: Sure. Kymmoy, a good Asian Oriental restaurant has space. You are reserved and your reference number is L7HRCY1K . Can I help with anything else? Sentence8: 10.10 pounds, and it's TR3864 Sentence9: Yes I need the price also. Sentence10: I don't have a preference. I need a table booked for six people at 13:45 on Thursday, though. Sentence11: No, that is all I need, thank you. Sentence12: Thank you so much for using our service. Have a good day. Goodbye. Sentence13: How about 12:45 instead? Sentence14: I need to book a nice expensive restaurant in the centre please. Sentence15: Are you certain I can't help with anything else right now? Sentence16: I can help you with that. What is your destination? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User