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: Cambridge has so many great museums to choose from, what sort of museum are you interested in visiting? Sentence2: I'm showing 33 hotel and guesthouses in the centre. What is your price range, do you want wifi and parking? If this is not a good area I can look more. Sentence3: No that's all I need today. Thanks so much. Sentence4: I would recommend Cambridge Contemporary Art at 6 Trinity Street. Sentence5: Thank you I also need a place to stay that has free wifi and 4 stars and in the west of town. Sentence6: Okay, so then book the taxi as requested please, and again do not forget the car type and contact number Sentence7: The postcode is cb30nd. Sentence8: I'm happy to tell you that i found three 4 star hotels on the West part of town. Can I book one for you or assist you further? Sentence9: Of course, a yellow ford has been booked for you. They can be reached at 07814309592. will that be all today? Sentence10: You are welcome and enjoy. Sentence11: Hello! I'm looking for a museum to go to. Sentence12: I also need taxi to take me from the Museum at 22:00 to the hotel, get me the contact number and car type for the taxi. Sentence13: I am sorry about that, we are swamped right now. The name is called finches bed and breakfast, sorry for any confusion. Sentence14: No, I just need the postcode please. Sentence15: I am not sure of the name, you did not provide it. Sentence16: Which on is in the west? Sentence17: I'm sorry for the confusion, what hotel did you choose so that I can book the taxi for the correct location? Sentence18: No, can you choose the best one for me and give me the address? Sentence19: I would like any type of museum that is located in the centre of town. Can you provide me with an address? Sentence20: Found 2 hotels with 4 star 1 expensive and the other is cheap which one will you prefer? Sentence21: I have no price range but it needs to be 4 star. Sentence22: There are 11 museums in that area. Would you like to learn about all of them? Question: Who has spoken the sentence 20? (A) User (B) System
Output: 


Answer: (A) User