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: No, it's located in the centre. Sentence2: I'll be departing from the stansted airport on monday. Sentence3: Thanks for the information, that is all. Sentence4: There are a few available. I highly suggest Cambridge Artworks located on 5 Greens Road. Do you need any information? Sentence5: how about parkside pools? they're pretty fun. Sentence6: And what time were you looking to depart? Sentence7: I'm trying to go to cambridge. Sentence8: I've found TR5754 leaving stansted airport at 11:24 and arriving in cambridge at 11:52. The price is 10.10 pounds, can I book this for you? Sentence9: How about a museum? Sentence10: That won't work then. I need one in the west. Sentence11: Can I look up any attractions, taxi or anything else for you? Sentence12: Is parkside pools on the west side? Sentence13: No. I do need to find a swimming pool in the west. Sentence14: What is your travel destination so I can narrow it down to a useful schedule? Sentence15: No, that is all I need today. Thank you so much. Sentence16: Thank you for using our services. Have a good day. Sentence17: Yes, I am looking for information on train schedules for my upcoming trip. Sentence18: Where will you be departing from? Also, what day will you be traveling? Sentence19: There are no pools in the west, can I run another search for you? Sentence20: Doesn't matter, as long as I arrived by 12:45. Question: Who has spoken the sentence 15? (A) User (B) System
Output: 


Answer: (B) System