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: You have been booked for Cityroomz. Your reference number is HAGWQ5KE . Sentence2: Thanks a lot for all your help! Sentence3: ok, anything else i can help you with? Sentence4: i am looking for a particular attraction. Its name is called the place. Sentence5: The hotel should be in the type of hotel and doesn't need to include internet. The hotel doesn't need to have free parking. price doesn't matter. Sentence6: Sure thing, that's 01223324600. Sentence7: Can you get me phone number please, thank you Sentence8: How about the Cityroomz? It's a hotel in the moderate price range. It's located at Sleeperz hotel, station road. Would that work? Can I book it? Sentence9: The Place is a nightclub located at 22 sidney street. Sentence10: I don't need you to book it thank you. Sentence11: Bye! I hope you have a lovely stay! Sentence12: Thanks. I am also looking for a hotel room. Sentence13: Yes what area would you like to stay in and what price range are you considering? Sentence14: Sorry, I am changing my mind. Please book Cityroomz for 4 nights starting on Saturday, for 8 people. Thanks. Sentence15: you are welcome all the time Sentence16: okay goodbye Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System