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: Actually it should be in the moderate price range. Sentence2: You might like City Harvest. It's a very popular modern European restaurant. Sentence3: No that was all I needed. Sentence4: your booking was successful. Confirmation # is AJANORT5, anything else today? Sentence5: Can you book it for me for 3 people at 14:00 on Wednesday? Sentence6: Yes, that is fine. I also need a place to stay that has free parking and at least a three star rating, can you find one for me? Sentence7: I found no hotels that are in the cheap price range like the restaurant. Is there another price range or star rating you would consider? Sentence8: i need one to be the same price range as the restaurant. Sentence9: If you need anything else contact our help desk anytime. Have a good day. Sentence10: yes, i have 5 that meet that criteria. Sentence11: Would you like to try Hamilton lodge? Sentence12: Hello, I'm looking for a modern European restaurant. Got any? Sentence13: I'm sorry, that restaurant seems to have closed. I can reserve a table at The River Bar Steakhouse and Grill if you'd like. Sentence14: Yes. I will need it for three nights, 3 people starting Wednesday. Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System