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: I need one that includes free wifi and is in the centre. Sentence2: Yes can you book it for 3 people Thursday at 20:00? Sentence3: Why, yes it is in the center. I can book you a reservation if you like. Sentence4: There is one option. It is cityroomz, a 0 star hotel. Sentence5: I definitely can. For how many people and how many nights? Sentence6: Can you book it for me? Sentence7: The postcode is cb12tz. Is there anything else I can do for you today? Sentence8: Can you book a taxi to pick me up from cityroomz and take me to Anatolia, arriving by 20:00? Give me car type and contact info Sentence9: Okay. Well, if you should need further assistance, don't hesitate to contact us. Thank you and goodbye. Sentence10: No thank you, that will be all for now. Sentence11: is it located in the centre? Sentence12: I will also need a taxi to pick me up at the hotel and take me to the restaurant. Sentence13: And what is the postcode? Sentence14: I can help you with that. I was able to get you a table for 3 at 20:00 on Thursday. The restaurant will hold your table for 15 minutes. Sentence15: Actually I just need to know how many stars they hotel has and the postcode. Sentence16: Sure, there are two. I recommend the Anatolia. Would you like a reservation? Sentence17: Thanks. O'm also looking for a place to stay, moderately priced. Sentence18: I'm looking for a moderately priced Turkish restaurant. Sentence19: Sure can, the booking has been completed! The car type is a yellow skoda and the contact number is 07710275649. Can I help with anything else? Sentence20: Again that has been booked your car type is a yellow skoda and the contact number is 07710275649. Can I help you with anything else? Sentence21: It is a 0 star hotel. Sentence22: There are three to choose from; The Ashley Hotel, Cityroomz, and the Lovell Lodge. Which would you like? Question: Who has spoken the sentence 1? (A) User (B) System
Output: 


Answer: (B) System