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: We have Cityroomz in the area. Would you like me to book you a room? Sentence2: Hello, I am going to nee a place to go in the centre of town. Multiple sports would be best. Sentence3: You can find Broughton House Gallery at 98 king street. The postcode is cb11ln, and entry is free. Sentence4: Starting on Wednesday please. 2 nights for 2 people. Sentence5: Yeah, that would be great. Thanks. Sentence6: Can I have the postcode, entrance fee and address? I also need a hotel within a moderate price range. Sentence7: Unfortunately, we don't have any attractions that match that description. Could you like to explore other areas? Sentence8: That would be the Broughton House Gallery. Do you need anything else? Sentence9: Are there any moderately priced hotels in that same area? Sentence10: No. Could we try a museum in the centre of town? Sentence11: That is everything I needed for today. Thank you for your help! Sentence12: OK, what nights and how many people? Sentence13: OK, you're all set for 2 nights at Cityroomz. Your reference number is NWD2GD50 . Can I help with anything else today? Sentence14: The are 11 entries found for "museum" at the center of town. Would you like the first listing? Sentence15: Thank you for using this system. Sentence16: Yes please. I need a room for 2 people for 2 nights starting wednesday. Question: Who has spoken the sentence 13? (A) User (B) System
Output: 


Answer: (B) System