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: Is that in the North area? Sentence2: That should work. Can you reserve enough space for 8 people starting on Monday, for five nights? Sentence3: You're welcome. I am happy you've enjoyed using our services. Bye for now. Sentence4: No booking needed today. In fact, I'm all set. Thanks for your help - goodbye! Sentence5: You will love the golden wok then, would you like more information or a booking? Sentence6: Yes, I would like to stay in the north. I need free wifi. I'd like to stay in a moderately priced guesthouse please. Sentence7: I do not have a preference on the type of food but it does need to be near the hotel. Sentence8: Hakka is an expensive restaurant. Would you like to book it or locate a different restaurant? Sentence9: Sure, do you have an area you want to stay in? Sentence10: There are 9 restaurants in the north. I recommend hakka. Sentence11: I want somewhere in the same price range as my hotel actually. And I don't care about food type but I want to know what kind of food it is Sentence12: Is hakka moderately priced? Sentence13: Yes it is in the North and it serves Indian food. I also found Golden Wok in the North serving Chinese food. Which would you prefer? Sentence14: Okay, your booking as complete! Your reference number is LQ3H9RZR . Can I be of any further help? Sentence15: I can help with that. Is there a certain type of cuisine or price range you are interested in? Sentence16: How about kirkwood house? They are located at 172 chesterton road. Sentence17: Can you suggest one, no wait, Chinese sounds wonderful! I love refried rice! Sentence18: I would like to book a place to dine as well. Sentence19: There is The Nirala, a moderately priced restaurant at 7 Milton Road Chesterton. Sentence20: i need a place to stay Question: Who has spoken the sentence 3? (A) User (B) System
Output: 


Answer: (B) System