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: There are quite a few museums in the centre of town, would you be interested in the Primavera or Cambridge Contemporary Art? If not there are others i can suggest. Sentence2: The Primavera sounds good. Can you give me the phone number, address and postcode? Sentence3: Yes, I'll need a taxi from the Primavera to Oak Bistro. Can you make sure I leave the Primavera no later than 17:00? Sentence4: Yes. I would like to go to a museum in the Centre of town. If price is no object, what's the best one? Sentence5: Can you recommend a good one for me? I'll need the address and postcode. Sentence6: I'm sorry, I don't have any restaurants that fit your needs, would another food type work for you? Sentence7: How about a restaurant that serves British food? Sentence8: The Oak Bistro is my favorite. They are located at 6 Lensfield Road, cb21eg. Can I help with anything else today? Sentence9: You are welcome. Have a nice day! Sentence10: The Primavera is located at 10 King S Parade, postcode cb21sj. The phone no. is 01223357708. Admission is free! Can I help you with anything else? Sentence11: Yes, I am looking for information for a restaurant of moderate price serving catalan food. Sentence12: There are 5 British restaurants that are moderately priced. Would you like to book a table with one of them? Sentence13: Okay, I have booked a taxi for you departing from Primavera at 16:45. The car will be a grey tesla and the contact number is 07439377051. Sentence14: Wonderful, that is everything I needed. Thank You! Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System