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: Do you need anything else? Sentence2: no that will be all thank you Sentence3: There are several swimmingpools as well as a park and a boat attraction in the north. do any of these appeal to you? Sentence4: sure, do you need some information? Sentence5: It doesn't matter when I arrive, but I need to make a booking for 5 people. And I definitely need a reference number for the booking. Sentence6: Okay, have a great day! Sentence7: The address is milton country park, milton, cb46az. Will that be all? Sentence8: No thank you. Sentence9: Booking was successful, the total fee is 151.19 GBP payable at the station, your reference number is EM5AYOET . Will that be all? Sentence10: Can you give me the address for the park? Sentence11: I am planning a trip in Cambridge. Sentence12: I need to book a train from Cambridge to Leicester, leaving after 20:00 on Sunday. Sentence13: There are 4 options leaving after 20:00, by what time do you want to arrive in leicester? Sentence14: Actually, I could use some help finding something fun to do in the north. Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System