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 need the train to arrive by 10:45 and should be on the same day as the restaurant booking. Sentence2: Thank you so much! Goodbye. Sentence3: The TR1180 will have you in Cambridge about 10:35. Sentence4: How about Chinese food? Still expensive, still in the center. Sentence5: I'm also needing a train that departs from Norwich and goes to Cambridge. Sentence6: Success! You've got a table for 2 reserved on Wednesday at 13:45. Reference number I51P6C79 . Can I help with anything else today? Sentence7: No I really wanted an expensive place in Centre that serves New Zealand cuisine. Sentence8: Could you try one of those different places? I really need that day and time. Sentence9: Yes, I have four that I can recommend. How about Ugly Duckling? Sentence10: Enjoy your stay in cambridge and have a great day. Sentence11: How about on Wednesday, the same time for 2? Sentence12: There are none in the centre. There is no New Zealand food at all. Sentence13: Sure, when would you like to travel? Sentence14: Hi, I'm looking for a restaurant that serves expensive new zealand food and is in the center area. Sentence15: I am sorry to say that all 4 of the restaurants do not have openings at that time. Would you like to see other price ranges or areas? Sentence16: There are no openings at that time, is there another time you would like me to try? Sentence17: I would like a table for 2 at 13:45 Monday. Sentence18: Sorry, there are no restaurants like that in the centre. Would you like to change the type of food? Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User