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: What side of town would you like to stay on? Sentence2: You're welcome, have a great day! Sentence3: What is your price range? Sentence4: Ok, I've got you a cab from hobsons house to graffiti, arriving by 17:45. The car is a yellow lexus. Contact number : 07292320210 Sentence5: Do you mean that it is close to the restaurant? Can you give me the phone number? Sentence6: cool, i need a place to stay, too. Sentence7: I would like to find a 3 star guesthouse that has free parking. I would need the area it is in and a phone number. Sentence8: There are no asian oriental places in that area of town. Would you like a different type of food? Sentence9: I can, what type of food are you looking for? Sentence10: thank you for your help. That's all I need today. Sentence11: Sorry, yes, that is what I meant. The phone number is 01223304906. I can book that for you if you'd like. Sentence12: Booking was successful, table will be reserved for 15 mins. Reference number is : I8UTT26J . Sentence13: What about British food in that part of town? Sentence14: I would like a three star place, if you have one. Sentence15: We were thinking we would like some Asian Oriental food, if available. Sentence16: If you'd like to stay near the hotel, the Hobsons House is a guesthouse in the west. It is moderately priced and has free parking. Would you like information on that? Sentence17: Let me try Graffiti out. Can you book it for 2 people on Saturday at 17:45? Sentence18: I don't really care. I do need free wifi, but parking doesn't really matter. Sentence19: I'm looking for somewhere to eat in the west. Can you help me out? Sentence20: In british cuisine, you have three choices. Saint John's Chop House is moderately priced, while Graffiti and Travellers Rest are expensive. Sentence21: No, thank you. I do need to book a taxi from the hotel that arrives at the restaurant by the reservation time, though, please. Sentence22: Your table is booked. Reference number is I8UTT26J . Question: Who has spoken the sentence 18? (A) User (B) System
Output: 


Answer: (A) User