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: Where would you like the taxi to take you, and when would you like to be picked up? Sentence2: Hi, I'm looking for a hotel in town with free parking and free wifi. Sentence3: There are 21 different guesthouses in the cambridge area. Did you have a certain area you wished to stay in? Sentence4: I'm sorry but there are no seafood restaurants in that part of town. Is there anything else I can help you with? Sentence5: The Ashley Hotel is a 2 star hotel and has free internet and parking. Would you like to book a room there now? Sentence6: I'm sorry there are no tables available for 8 at that time. Would you like to try a different time? Sentence7: Can you please try to make a reservation at the cheap location then for 14:45 for 8 people on friday? Sentence8: No, it's a hotel. Would you prefer a guesthouse? Sentence9: Yes, I definitely want a guesthouse. Sentence10: I would like to book a taxi to commute Sentence11: Is it a guesthouse? Sentence12: I'm sorry, but there seems to be an error in my system. Could you please restate your requirements? Sentence13: Great! Have a wonderful day and enjoy your meal! Sentence14: Let's go with the moderate price. Can you please make the reservation for 8 people? Sentence15: Yes, please. Can I get the reference number, please? Sentence16: There are 21 guest houses that meet that criteria. Do you have a price range or star rating preference? Sentence17: I am looking for a gueshouse type hotel with at least three stars for 8 people for 5 nights starting Friday. Sentence18: Unfortunately the booking was not successful. Sentence19: Booking was successful. The table will be reserved for 15 minutes. Reference number is : L09JJ3XT . Is there anything else I can help with? Sentence20: Rosa's Bed and Breakfast is a four star guesthouse at extremely reasonable rates. Would you like me to see if I can book you there? Sentence21: The area doesn't matter as long as I can book it for 8 people for 5 nights starting Friday Sentence22: No, I need the same time. Are there other Italian restaruants on the west side? Sentence23: Sure, I have booked your car a blue ford Contact number 07599887198. Can I help with anything else? Sentence24: Alright, your room has been booked for 8 people, 5 nights starting Friday. Your reference number is CKLFOESQ . Can I help you with anything else? Sentence25: Can you help me book a taxi from Rosa's B&B to the restaurant that will get me there by 14:45 when my table is ready? Sentence26: Yes there are 2 italian restaurants in the west side, one is prezzo, the other la margherita. Do you prefer cheap or moderate price? Sentence27: I'd like to find a restaurant that serve italian food and book a table for everybody at 14:45 the day i leave Sentence28: Well I suppose I should choose a restaurant first. Do you know of a seafood restaurant on the west side of town? Sentence29: I would prefer at least three stars, please. Sentence30: No, that should be it. Thanks. Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System