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 day will you be arriving? Sentence2: I meant Cambridge please. I would like to arrive in Cambridge on Monday after 21:15. Sentence3: Please book the hotel for 4 people and 2 nights. Thank you. Sentence4: I need to take a train from Norwich, leaving after 21:15. Sentence5: I would like to keep it in the moderate range, please. Sentence6: Great, thanks! I'm also looking for a 4 star hotel in the north. Can you please help with that? Sentence7: There are trains arriving at 22:35, 23:35 and 24:35. They are 17.60 pounds and 79 minutes each. Sentence8: I would like to go to Ely please. Sentence9: That's all I need for today. Thanks for your help! Sentence10: the same day... monday please. Sentence11: Where would you like to go to? Sentence12: I'm happy to help, and I hope you enjoy your stay! Sentence13: Shall I try to start and book you into one? Sentence14: I see 7 options. They are all guesthouses. Do you have preferences for internet and parking? Sentence15: I do not have a preference on those things. Sentence16: I don't need anything booked. I just need to get the arrival time, travel time and price of a train from norwich to cambridge leaving after 21:15. Sentence17: There are several that meet your criteria. Is there a price range you are interested in? Sentence18: How many nights will you be staying? Sentence19: Please book it and provide the reference number. Sentence20: Ok I will book that for you and get you a confirmation number Sentence21: I don't have any listings for trains leaving Norwich and arriving in Ely. Would you like to try a different departure station? Sentence22: I apologize, some of our new workers have phobias of the booking system, I booked you at Acorn guest house, the reference number is 04CSEO7Q any other questions? Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System