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: Hi, i am looking for some museums that I could visit when in town, could you help me find some? Sentence2: The postal code for Cafe Jello Gallery is cb30af. Okay, Hobson's House matches your request. Sentence3: No thanks. I will do that later. Can you please arrange for taxi service from Cafe Jello to Hobson's House sometime after 04:00? Sentence4: Your welcome. Have a great day! Sentence5: I recommend the Cafe Jello Gallery in the west. It's free to enter! Sentence6: I was able to book that for you. Be expecting a grey Tesla. If you need to reach them, please call 07615015749. Sentence7: Do they have internet? Sentence8: That museum from earlier is fine, I just need their postalcode. I need a hotel two in the west and moderately priced. Sentence9: Is there an area of town you prefer? Sentence10: Yes they do. Would you like me to book a room for you? Sentence11: No, I don't care. Sentence12: Well that you that is all i need for today Sentence13: Just to clarify - did you need a different museum? Or a hotel? Sentence14: Great! There are 33 hotels in the area. What area of town would you like to stay in? What is your preference on price? Sentence15: I also need a place to stay Sentence16: The attraction should be in the type of museum. I don't care about the price range or the area Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System