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're welcome, have a nice day. Sentence2: Your taxi has been booked. The contact number is 07330545456. Is there anything else I can help you with today? Sentence3: Okay well please call back if you change your mind. Sentence4: I'd love to visit a park, especially a botanical garden if one is in that area! Sentence5: Will it arrive at the restaurant by the booked time? Sentence6: Booking was successful. The table will be reserved for 15 minutes. Reference number is : B1TRUT9Y . Sentence7: Unfortunately there are no restaurants that match that description. Could you like to try other food types? Sentence8: I would prefer expensive and I'm looking to reserve a table for 1 at 17:00 on Sunday, please. Sentence9: There are 44 attractions that fit your criteria. Are you looking to visit a specific type of attraction? Sentence10: Cambridge University Botanic Gardens is located in town centre. Would you like more information? Sentence11: It is a red honda, and their phone number is 07330545456 Sentence12: I can get those reservations for you at la mimosa. Would you like me to make the reservation? Sentence13: Okay, would 16:00 be a better time on Sunday? Sentence14: I'm looking for an attraction in the centre of town. Sentence15: No, thanks for helping. Goodbye! Sentence16: Yes, I need a table for 1 at 17:00 on Sunday. Sentence17: Yes, may I have their phone number please? I'd also love to eat at a Malaysian place near the park. Any ideas? Sentence18: I have confirmed that the taxi will arrive at La Mimosa at 16:00. Is there anything else I can help you with today? Sentence19: Unfortunately, that time slot is unavailable. Can I try a different time for you? Sentence20: Correct. Everything is set. Sentence21: Hi, I would love to try a Mediterranean restaurant. Do you have any suggestions? Sentence22: ok, that's all I needed, thank you. Sentence23: Can you confirm the time that taxi was booked? I need it to arrive at the restaurant by 16:00. Sentence24: I just need to know what type of car you booked for the taxi. Sentence25: There are three options, the gardenia which is cheap in price range, along with la mimosa and shiraz restaurant which is expensive. Ant preference? Sentence26: I would like to book a taxi to commute between the two places. Question: Who has spoken the sentence 18? (A) User (B) System
Output: 


Answer: (A) User