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: Could you book for my party at 15:15 on Wednesday? Sentence2: I will also need a taxi from the hotel to the restaurant. Sentence3: thank you very much Sentence4: welcome anytime you want to inquire Sentence5: i am looking for a hotel in the south. Sentence6: Italian will be fine. Sentence7: I also want to eat at an expensive Cuban place. Sentence8: it should have a 4 stars rating Sentence9: We have one place the lensfield hotel, would you like more information? Sentence10: aylesbray lodge guest house is moderate and in the south. would you like to book a room now? Sentence11: there is one cheap and one expensve. which one would you prefer? Sentence12: The reservation is for 7 people. Sentence13: Thank you so much for your help much appreciated. Sentence14: Thank you for trusting me to make the bookings for you. Sentence15: For how many please ? Sentence16: Booking was successful. The table will be reserved for 15 minutes. Reference number is : TP3B0YH5 . Anything else I can do for you? Sentence17: No problem. I booked you a white bmw that will get you there by 15:15. The contact number is 07961694517. Sentence18: Is there any cuban restaurants near the hotel in the moderate range? Sentence19: Thank you! It does not matter to me. Sentence20: Booking was successful. Reference number is : PHDX0SZC . anything else? Sentence21: According to my records, there aren't any hotels that meet your requirements. Sorry! Would you like to try something else? Sentence22: Yes, please! 7 of us will be arriving on Wednesday, and we'd like to stay 5 nights. Sentence23: pizza hut cherry hinton is the only restaurant serving italian food in the south part of town in the moderate price range. Would you like to book or more information Sentence24: No I apologize. Would you be interested in a different cuisine? Sentence25: I'm sorry - we don't have any expensive cuban restaurants in the area. Is there something else I can look up for you? Sentence26: How about a guesthouse with 4 stars? Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System