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: Your room has been reserved. Reference number is RQ1GW9PE . Sentence2: Great. I'm also looking for a place to stay. Can you look for a 4 star hotel with free parking? Sentence3: Well the Milton Country Park is free and their address is milton country park, milton. Sentence4: Yes, I'll be coming in on Wednesday with 5 people total. We'll be staying for 5 nights. Sentence5: I found a great 4 star guesthouse on the east side in the moderate price range. It's carolina bed and breakfast. Would you like me to book you a room? Sentence6: There are none in the moderate price range, I have a couple expensive and 1 cheap. Do you have a preference? Sentence7: How about guesthouses? Any matches? Sentence8: I'm wanting to find an attraction to go to in the north part of town. Do you have any suggestions? Sentence9: from the hotel to the attraction please Sentence10: Sure! There are swimmin pools, boat, and a park. What would you like more information on? Sentence11: Can you book it for me and get a reference number ? Sentence12: A blue ford will arrive at Carolina Bed and Breakfast at 22:00 to take you to Milton Country Park. The driver's contact number is 07842440492 Sentence13: I have 3 hotels matching your request. Two are in the west and one center. Do you have a preference in part of town? Sentence14: I only need a taxi. Sentence15: Any of your favorites will do as long as it's in the north. I'll need the address and entrance fee information as well, please. Sentence16: You are welcome. Do you need any information about restaurants? I can help with that, too. Sentence17: Are any of them in the moderate price range? Sentence18: Sorry, can you clarify which is the destination and which is the departure site? I know you want to arrive by 22:00 but at which place? Sentence19: Thanks, i also need a taxi between the two places. I need to get there by 22:00 Sentence20: Great, thanks! You've been a big help. Question: Who has spoken the sentence 2? (A) User (B) System
Output: 


Answer: (A) User