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: It really needs to be 19:00 for 3 people on Tuesday at La Raza. Can you try again please? Sentence2: Can I please have the exact address location? Sentence3: I can recommend the Cambridge University Botanic Gardens, it's both peaceful and interesting. The entrance fee is 4 pounds. Does that sound like what you're looking for? Sentence4: I am happy to have been of assistance. Have a great day. Goodbye. Sentence5: There are many things to do in the centre is there a type of attraction you are looking for? Sentence6: No, I just need the reservation for that time and place. Sentence7: That sounds wonderful, what is the address on that? Sentence8: Yes, please. Sentence9: And where are you leaving from? Sentence10: I was able to book that taxi for you. Be looking for a red Ford. If you need to reach them, their phone number is 07033355721. Anything else for today? Sentence11: Yes, thanks! I also need a table at La Raza, please. Tuesday, 3 people, at 19:00. Sentence12: Sorry, that was also unsuccessful. Sentence13: La Raza is completely booked at that time, I apologize for the inconvenience. Would you like to try an earlier reservation? Sentence14: Okay. Thank you very much. Sentence15: Okay, well, I'll take my chances on availability when I get there. I also need a taxi to get to the restaurant by 19:00. Sentence16: The Botanic Gardens are located on bateman street. Is there anything else I can help you with today? Sentence17: Is there another time you'd like to try, it is not avaialble. Sentence18: How about 18:00? Sentence19: I am looking for attractions in the centre. Sentence20: Yes, 3 people at 19:00 on Tuesday. If that doesn't work, I'll just call and book it myself. Sentence21: Really? Can you try one more time? I really wanted La Raza on Tuesday for 3 people at 19:00. Sentence22: I'm sorry that time is not good either, are you positive you need it for 3 on Tuesday? Sentence23: Did you want to try earlier? Sentence24: Any place would be great. Sentence25: The Botanic Garden at Cambridge University Sentence26: Cambridge University Botanic Gardens is located on bateman street. Does this help? Sentence27: I was unable to book that time. Would you like to try another time? Sentence28: Unfortunately they are booked at this time. Can I possibly try a little bit earlier or later for you? Question: Who has spoken the sentence 27? (A) User (B) System
Output: 


Answer: (B) System