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: Yes how many nights will you be staying and when will you be arriving? Sentence2: What day and time would you like to travel? Sentence3: I'm looking for a train departing from cambridge going to birmingham new street. Sentence4: Yes please book me a reservations for 3 people at Rosa's Bed and Breakfast and find me the cheapest rate. Sentence5: What day does your stay begin? Sentence6: Thank you! Yes, what is the star of the hotel please? Sentence7: This is a four star hotel. Sentence8: Would you like me to book it for you? Sentence9: I will be there for 3 nights. Sentence10: Please let us know if there is any way we can assist you in the future. Have a wonderful trip. Goodbye. Sentence11: OK, your booking was successful. The reference number is UNV1RXY7 . Can we help you with anything else? Sentence12: For three people please. And can you give me the reference number? Sentence13: Yes please, that would be great. Sentence14: thanks a lot, that is enough for today Sentence15: the address is 53 roseford road and the phone number is 01223512596 Sentence16: TR8873 leaves at 22:01 and arrives at 24:44. Would you like me to book? Sentence17: I would like it for wednesday Sentence18: get me the address of the hotel and phone number Sentence19: I have one called Rosa's Bed and Breakfast which is actually a guesthouse. Would you like to book that? Sentence20: Your total is 225.3 GBP payable at the station. Your reference number is 5AXU412R . Can I help with something else? Sentence21: I would like to book a cheap hotel in the south area. Sentence22: Wednesday leaving after 21:00 please. Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System