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: Sure, I'd like to suggest the cafe jello gallery. Is that everything? Sentence2: I have booked Finches Bed & Breakfast for you starting Sunday for 4 nights for 8 people. Your reference number is H7WHFPQT . Is there anything I may assist with? Sentence3: I would like free parking and wifi for sure. Preferably on the west side with 4 stars, too. Sentence4: That sounds wonderful. Could you reserve our rooms? We'll be a party of 8, and we'd like to arrive on Sunday. I think we'll be staying 4 nights. Sentence5: I am looking for a place to stay. Sentence6: Unfortunately, I could not find a park in the west. Can I try a different area? Sentence7: I'd suggest Finches Bed and Breakfast. It's a guesthouse in the west area with free internet and parking. Sentence8: You're welcome, have a great day as well. Sentence9: May I please get their address and phone number? Sentence10: The Cafe Jello Gallery is at cafe jello gallery, 13 magdalene street and their phone number is 01223312112. What else can I do for you? Sentence11: No, you've been so helpful. Thank you so much! Have a great night. Sentence12: Thank you, yes, I'd like to also find a nice park to visit while I'm in town. Can you see if there is one near my hotel? Sentence13: No, but can you try to find a museum in the west please? Sentence14: Sure. Do you have a preference as to location, price, or amenities? Question: Who has spoken the sentence 10? (A) User (B) System
Output: 


Answer: (A) User