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: These are several selections available to you. Let me know which choice you have made and I will make the required booking for you. I can recommend Marriott but the Cambridge Belfry is cheaper. All three close to all of our attractions and all the main restaurants. Sentence2: tuesday and I would like to get there by 13:15 Sentence3: Can you help me find a train departing cambridge going to bishops stortford? Sentence4: Yes, that would be great. I'll need to know the price and departure time please? Sentence5: The closest I can get you to 13:15 is 12:07 and that will be TR4041. Does that work for you? Sentence6: I am happy to assist you, what date and time will you need? Sentence7: That train departs at 11:29. The cost is 10.10 pounds. Would you like me to book it for you? Sentence8: No thank you, I do need a place to stay though, I want a nice 4 star place with free wifi, please. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System