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: can you give me more specifications on the hotel you need? Sentence2: Have a wonderful trip. Sentence3: How does the Allenbell sound? Would you like more information? Sentence4: You're welcome. Can I assist with anything else today? Sentence5: Thank you for your time. Sentence6: We got that booked for you. Your reference number is NBY8UOS8 . Sentence7: No. That is all. Thank you. Sentence8: I am also looking for a hotel. Sentence9: I need a train from Stevenage that would leave after 10:45. Sentence10: I would be travelling on Monday and heading TO Stevenage FROM Cambridge. I'm sorry, I stated that wrong the first time. Sentence11: I have successfully booked a seat on TR6930. The fee is 12.8 GBP and reference number is MWJYC3CD . Can I help with anything else today? Sentence12: I need the hotel for 6 people, 3 nights starting Friday. I also need a reference number Sentence13: THere is a train that leaves at 11:21 and then trains that leave every two hours after that. Does one of those sound best? Sentence14: A guesthouse with free parking would be great. Sentence15: Yes, I would like to take the one at 11:21. Can you give me the train ID, travel time, and price for that train? Sentence16: What day would you be traveling on? And where would you be heading to? Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System