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: Does the train leave on Friday? Sentence2: It was my pleasure to help you today. Enjoy Cambridge and text us back anytime! Sentence3: There are quite a few options open to you, is there a particular destination you have in mind? Sentence4: Your table is reserved for 10:15. Your table will be held for 15 minutes. Your reference number is : 3H26GVJV . Is there anything else I can help you with? Sentence5: Great, thanks. Can you also provide me with some info on a restaurant called Travellers Rest? Sentence6: No, that is all that I needed. Thank you for your help! Sentence7: I would like to go to broxbourne Sentence8: There is no train leaving at 21:45, but there is train departing at 21:59 do you want that train? Sentence9: Could you please make a reservation for us at 11:15 on the same day? Sentence10: How about 10:15? Sentence11: Yes, the 22:01. Book that for 2 people. I need the reference number too. Sentence12: I apologize. That train does not leave on Friday. For Friday, I have two trains. One departs at 22:01 and the other at 23:01. Does one of these work? Sentence13: I'm unable to make that reservation for that time. Would you like to try a different time? Sentence14: Your reservation is confirmed forTR9312 Leaving Cambridge at 22:01, arriving in Broxbourne at 23:01. Your reference number is 59C0U68K . Total fee is 35.79, which is payable at the station. Sentence15: Absolutely! That is a British restaurant on the west side of town. It is considered to be in the expensive price range. Sentence16: Hello, I'm looking for a train that departs from Cambridge and leaves after 21:45. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User