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: Okay, was there a specific time you were looking for? Sentence2: I have booked you for 8 people at 11:15 on Wednesday at Yippee Noodle Bar. Your reference number is: TCLMEX5I Sentence3: Ok great and what time do you prefer? Sentence4: I need to arrive at the restaurant in time for our reservation. Wouldn't want to miss my booked time. Sentence5: No thanks. That does it. Have a good night. Bye. Sentence6: Yes. Three nights, from Wednesday. 8 people. Sentence7: I have booked you a taxi. The contact number is 07375849542 and it will be a grey Volvo. Is there anything else I can help you with today? Sentence8: There are many can I get a price range you are looking for? Sentence9: I am not concerned with price. Sentence10: Sure thing would you like a reservation? Sentence11: Thank you. I also need a taxi two commute between the hotel and restaurant. Sentence12: Our reservations are for 11:15. Sentence13: There are no Belgian places in Centre at this time. Would you like to try a different cuisine or area? Sentence14: Yes. Please try European food in the Centre. Sentence15: we dont have a place that matches those qualities. can you try something else? Sentence16: Enjoy your visit! Let us know if we can be of any further assistance. Sentence17: What restaurants are located in the centre? Sentence18: I'm also wanting to stay at the Alpha-Milton Guest House. Can you help with that? Sentence19: Good news, the booking of the hotel was successful, and the Reference number is : V3PB9S6V . Sentence20: Yes that would be fine. Please make reservations for 8 people at 11:15 on wednesday. Sentence21: Can I interest you in a moderately priced restaurant called Yippee Noodle Bar, an Asian Oriental restaurant in the city centre? Sentence22: I'm looking for a Belgian food restaurant in the centre. Can you help me? Question: Who has spoken the sentence 19? (A) User (B) System
Output: 


Answer: (B) System