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 would like to dine at 13:30 and I also need the reference number. Sentence2: I also am looking for a place to stay, it will need to be on the east side and have free parking, I don't need internet. Sentence3: Thank you for all your help. That sounds perfect. Sentence4: You are quite welcome. Please enjoy your stay in Cambridge! Sentence5: Sure on the east side with free parking how about allenbell, autumn house, carolina bed and breakfast, or leverton house all guesthouses. Sentence6: Restaurant Alimentum is moderately priced. They are located at 152-154 Hills Road. Would you like me to make a reservation for you? Sentence7: Sure, i want 3 nights starting Wednesday please. Sentence8: You reservation is made for 13:30 and your reference number is X1UVXL1X . Can I help you with anything else? Sentence9: restaurant alimentum sounds interesting. Could you give me more information about this location? Sentence10: Yes, I would like a table for 2 on Wednesday. Sentence11: Alright, your room has been booked at the Autumn House for 3 nights starting on Wednesday. Your reference number is RDXXH6Q8 . Sentence12: Let's choose autumn house. Do you have a preference for a time of day and for how long? Sentence13: Unfortunately there are no Hungarian restaurants in the area. Pizza hut cherry hinton serves italian and restaurant alimentum serves modern european if those interest you. Sentence14: What time would you like the reservation to be for? Sentence15: Any of those could work. You decide. Sentence16: I found Pizza hut cherry hinton and Restaurant Alimentum for you. Sentence17: Can you find a restaurant for me that is southern and is in the mid price range? Sentence18: Does either one serve Hungarian food? I'd like Hungarian food. Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User