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: In the centre, please. Also, free parking. Sentence2: Unfortunately, I am not finding anything that meets all of your requirements. Would you mind if I searched another area of town? Sentence3: Can I have the address of the hotel? Sentence4: Excellent! I hope the hotel is a pleasure. Sentence5: I have got quite a few that should suit your needs. Is there a preference on what area of town you stay? That might help narrow down the options. Sentence6: Thank you very much! Sentence7: yes, it is a guesthouse and their phone number is 122 336 3682. Sentence8: The address is warkworth terrace. Sentence9: Can you see if there's anything in the east? Sentence10: The Carolina Bed and Breakfast and the Warkworth House. They both have free wifi and parking and they both fall in the moderate price range. Do either of these sound good? Sentence11: Can you recommend a place to stay that has free WiFi? I need something in the moderate price range. Sentence12: Great. Can you give me the phone number and address for The Warkworth House? Also, is it a guest room? Sentence13: Nothing thank you, that's all I need. Have a nice day! Sentence14: You're welcome. What else can I do for you? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System