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're welcome, have a great day! Sentence2: I want a taxi between the hotel and Ugly Duckling in time for my booking. Sentence3: That is all I will need. Thank you. Sentence4: Price doesn't matter to me. Do you have any recommendations? Sentence5: I also need a taxi to commute between the two places. Sentence6: Please I need a place to Stay in Cambridge and I have the express by holiday inn Cambridge in mind. Can you help book that for me? Sentence7: I do! I'd recommend the Ugly Duckling. Would you like to book a table? Sentence8: I need a few more specifics before I can book that taxi for you. Sentence9: I also need a restaurant in the center of town that serves chinese food Sentence10: Yes, please book a table for 4 people at 12:15 on tuesday. Sentence11: That hotel is considered to be on the more expensive side. Sentence12: What price range were you considering? There are 10 Chinese restaurants in that area. Sentence13: I can help with that. When would you like to stay? Sentence14: we have booked white bmw and the contact is 07951264256 Sentence15: All srt, the reference number is GCSU8UZP Can I assist with anything else? Sentence16: I am not sure. Would you happen to be able to tell me the price range? Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User