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: I have train TR4494 that will be departing at 09:59 and arriving by 11:27. Would this interest you? Sentence2: Can you tell me where you are departing from please and the number of tickets you will need? Sentence3: Are you looking for an attraction in the Centre of town as well? Sentence4: what kind of attraction would you like to visit? Sentence5: I need to arrive by 12:15 please. Sentence6: Yes. Can you try 16:15? Sentence7: Yes, attractions in the Centre of town would be great. Sentence8: Yes, Bedouin is in the expensive price range and is in the centre of town. Sentence9: Do you prefer a certain type of cuisine? Sentence10: I'll be leaving Cambridge and need 7 tickets. Sentence11: Hi. I'll be traveling to there and can't wait to try the restaurants there. Could you help me find a place? Sentence12: I have gotten you 7 tickets on train TR4494, reference number ENXXH8XH and the total fee is 116.2 GBP. Is there anything else I can help you with? Sentence13: Yes, I would like to make a booking please for 7 people. Sentence14: My apologies. The table you requested is not available at 17:15 on Monday night. Would you like to try a different day or time? Sentence15: Your restaurant and travel accommodations have been booked. Reference number KCIWXESP and HTEPD4LJ respectively. Is there anything else I can help you with today? Sentence16: That would be it for today. Thank you Sentence17: Alright, there are 10 trains traveling to London Liverpool Street. Is there a particular departure or arrival time you are wanting? Sentence18: No you have been most kind. Thank you for doing the bookings. Are there any attractions in the same area? Sentence19: Yes, I would like to try South African cuisine. Sentence20: Is it in the expensive price range? Sentence21: I have decided I don't really need an attraction. I think that will be all today. Sentence22: I have a restaurant called Bedouin located downtown an 100 Mill Road, if that interests you. Sentence23: On what day would you like to book? Sentence24: We will be there monday night. Sentence25: Yes, go ahead and book that restaurant for 7 people at 17:15, please. Sentence26: I am also needing train tickets for Tuesday going to London Liverpool Street. Sentence27: I was able to make reservation for you on Monday at 16:15 for 7 people. Your reference number is KCIWXESP . Is there anything else I can do for you? Sentence28: I hope you enjoy your stay in Cambridge. Goodbye! Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User