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: How about the alexander bed and breakfast. And has free parking and free wifi. Sentence2: No, but I want free parking. Sentence3: That sounds fine. I'm also looking for something to do in the west part of town. Got any recommendations? Sentence4: I'm not ready to book just yet. Do any have internet? Sentence5: Clare Hall is located on Herschel Road and has the postcode CB39AL. Is there anything else I can help with? Sentence6: There are no 2 star hotels available. Sentence7: Great. I have 9 available that offer free parking. Is there a star rating you'd prefer? Sentence8: Hello, I'm looking for an inexpensive hotel to stay in while I'm in Cambridge. I would like it to be a guesthouse type of room please. Sentence9: No star rating. I just need it to be a guesthouse, cheap, free parking and if they have internet. Sentence10: we have lovely college's in the west, clare hall is one of my favorites! Sentence11: No, that is all I need today. Thank you so much. Sentence12: Ok, let's try Clare Hall. What's the address and postcode? Sentence13: Okay I'll need some more information to book that for you. How many people, for how long and when please? Sentence14: Thank you for contacting the Cambridge TownInfo centre. Goodbye Sentence15: I'd prefer one with at least a 2 star rating. I'd also like one with internet. Sentence16: I have several throughout the city. Is there any location you would prefer it in? Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System