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: Find me a college in the centre, please. Sentence2: I also need a taxi to go between the two places. Sentence3: Any criteria come in mind for the restaurant as far as price, location, type of food? Sentence4: I was able to successfully book you for 2 at 18:45 on Tuesday at Galleria. The reference number is MWT848BZ . The table will be reserved for 15 minutes. Sentence5: Would like to dine somewhere with a moderate price range. Sentence6: What time would you like to leave? Sentence7: Sure, look for a white Tesla. The reference number is 07472267746. May I be of further assistance to you today? Sentence8: The Oak Bistro is a nice British Restaurant in the centre. Does that sound appetizing? Sentence9: Does that serve European food? Sentence10: Sounds good. I need it for 2 people at 18:45 on Tuesday. Sentence11: Yes, I'd like a table for 2 on Tuesday at 18:45 if that's possible. Sentence12: Yes it does serve European food. Would you like me to book it? Sentence13: Entrance fee is just 1 pound. Their phone is 01223338400 and post code is cb21tq. Does that sound good to you? Sentence14: Yes thank you. I'd also like to find a restaurant in the same area. Sentence15: Maybe Trinity College. What's their entrance fee, phone number, and what postcode are they in, please? Sentence16: I can schedule a taxi for you from here, I can book one for the closest time to 18:45. Sentence17: I just want to make sure the taxi arrives at the restaurant by the booked time. When would you recommend I schedule the cab? Sentence18: My apologies. The Oak Bistro is a British restaurant, but if you want a restaurant that specializes in European food, I'd suggest Galleria. How about booking that? Sentence19: No, that is all that I needed. Thank you for your help! Sentence20: There are thirteen to choose from. Downing College is nice, and of course there's always Trinity College. Can I get you more information about them, or one of the others? Sentence21: Thank you for contacting Cambridge TownInfo centre. Goodbye! Sentence22: Great, can I get the contact number and the car type? Question: Who has spoken the sentence 8? (A) User (B) System
Output: 


Answer: (A) User