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: Awesome. I also need a Hungarian restaurant in the centre, please. Sentence2: Would you like a specific price range? Sentence3: Can you help me find a train headed to Cambridge on Sunday? Sentence4: I have a few options, do you have an arrival time in mind? Sentence5: I sure can. Where will you be boarding? Sentence6: No thanks. That will be everything. Goodbye. Sentence7: Absolutely your reference number is Z6QD1AXD Sentence8: I would like to leave london liverpool street after 12:30. Sentence9: That's great can you book it for 8 people? Sentence10: Sure. What about modern European? Sentence11: I don't have any Hungarian restaurants in the centre. Would you like to try another type of cuisine? Sentence12: No, I'm not really particular about the price. Any modern european restaurant would be great. Sentence13: I would recommend Riverside Brasserie. It's a moderately priced modern european restaurant located in the centre. Would you like me to make a booking for you? Sentence14: Yes please, same group of eight, Sunday, 16:45. Sentence15: I would recommend train TR6578 Sentence16: I'm departing from London Liverpool Street, and my train needs to leave after 12:30. Sentence17: Your table is reserved for 15 minutes. The reference number is UQM6L628 . Can I help you with anything else today/ Sentence18: Alright. Have a nice trip! Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System