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: You are welcome. Have a great day. Goodbye. Sentence2: Can you get some information for me about swimmingpools in that area? Sentence3: Yes, the Kings one. How much to get into that one? Sentence4: You're booked at Da Vinci Pizzeria on Monday at 11 for 7 people. Your reference number is MTHF8EE1 . Is there anything else I can help you with? Sentence5: There is an indian restaurant or an Italian one. Which would you prefer? Sentence6: I'll go with Italian. I need you to book it for 7 people, at 11:00 on Monday. I'd also like a reference number. Sentence7: I do not see an entrance fee listed but their phone number is 01223353248. Can I help you with anything else? Sentence8: Can you give me the post code as well please? Sentence9: no that's all thanks Sentence10: Their postcode is cb42xh. Can I help with anything else today? Sentence11: Yes, there are two swimming pools in the north. The Jesus Green Outdoor Pool and Kings Hedges Learner Pool. Would either of those be of interest? Sentence12: Please find a cheap restaurant in the north. Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User