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: There is a train leaving Kings Lynn at 08:11 arriving at 08:58 in Cambridge. Do you want me to make a reservation? Sentence2: The price is 9.80 pounds, payable at the station. How else can I help you? Sentence3: Ok, I would like to book a table for 4 at 13:15 on Monday if possible? Sentence4: No, just tell me the price. Sentence5: That should be all thank you Sentence6: Okay, I've located a train departing Peterborough and arriving at 09:38. How many train tickets do you want? Sentence7: I would also like a train on the same day as the restaurant booking and should arrive by 09:45. Sentence8: The train needs to depart from Kings Lynn and go to Cambridge. Sentence9: Sure the number is 01223518111 Sentence10: I'm sorry but a table isn't available at that time or day. Would you like another time? Sentence11: I have booked a table for 4 at 12:15 on Monday. Your reference number is YYS0SW42 . Sentence12: Alright. If you think of anything else you may need feel free to contact me. Have a good day. Sentence13: I'd really like to get the number for the Yippee Noodle Bar restaurant if you please? Sentence14: Hmm.. how about 12:15? Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System