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: Great! Would you like to book a train to take you there? Sentence2: am going to stansted airport Sentence3: That's good. Book me in for 3 people and 4 nights starting Tuesday. Sentence4: Saturday, please. I will need the departure time, train ID, and price. Sentence5: Ok. Where do you need the taxi to pick you up at? Sentence6: Okay. Glad I could help. Have a great trip. Goodbye. Sentence7: I have you booked at the Hobsons House starting Tuesday for 4 days for three people. Your reference number is P4RWFGM2 . May I help you with anything else? Sentence8: I need to arrive at the airport by 14:45 on Saturday. Sentence9: Okay, what time would you like to leave? Sentence10: There are 9 results. Is there a certain time you'd like to leave by? We can narrow the results down that way. Sentence11: Can I be of any further assistance? Sentence12: What do you need to know about the Hobsons House guesthouse? Sentence13: Yes, I need a taxi please. Sentence14: i am planning a trip in cambridge Sentence15: I will bee a hotel called hobsons house. Sentence16: I think this train might work well for you. TR6193 leaves at 13:40 and gets in at 14:08. It costs 14.08 pounds. Can I book this? Sentence17: You are very welcome. Is there anything else I can help you with? Sentence18: No, that's all I need today. Thank you. Good-bye. Sentence19: Not right now. Thanks for all your help though. Sentence20: Nevermind. I will not need the taxi after all. Thank you for all your help. Please book a seat on TR6193 for me. Sentence21: thank you for your help today ! Sentence22: Where would you like to go? Sentence23: I would just like some general information before I book, what area is it in? Sentence24: i'm also looking for a train leaving from cambridge. Sentence25: It's located in the west. Would you like more information? Sentence26: Your train is booked for Sat your fee is 24.24 GBP and payable at station. Your ref. number is HGQGS7MX Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System