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: That is all I needed help with, thank you. Sentence2: Wandlebury Country Park is spectacular. The address is Wandlebury ring, gog magog hills, babraham postal code CB223ae. Phone number 0122324830. Sentence3: TR1681 will arrive at 20:08, would that work for you? Sentence4: Can you select your favorite of the two parks and provide me with their address and phone number please? Sentence5: Can you give me the address for the cinema? Sentence6: Yes, I'm looking for places to see in the south. Sentence7: Their phone number is 00872208000. Is there anything else I can assist you with? Sentence8: Yes, can you provide me with their phone number? Sentence9: Yes, that sounds good. Please book a ticket on TR1681 for 6 people for me. Sentence10: Yes, what's the entrance fee for the cinema? Sentence11: You're welcome. Enjoy your day. Sentence12: Sure thing! You are looking for Cineworld Cinema and the address is Cambridge Leisure Park, Clifton Way. Can I help you with anything more today? Sentence13: There is a cinema, two entertainment facilities, a museum, and a nightclub. Would you like more info about any of those? Sentence14: Okay, I can help you with that. Where will you be traveling? Sentence15: Unfortunately I don't have the entrance fee information. Can I help you with anything else? Sentence16: The booking was successful, your reference number is EAWIQ7HX . Is there anything else I can help you with? Sentence17: Do you know the entrance fees to any of the other places you mentioned? Sentence18: From London Kings Cross to Cambridge. Sentence19: I need a train leaving on a Sunday and arriving by 21:15. Sentence20: I have information on two parks and one museum, these have free admissions. I do not have entrance fee info on the others. Anything else? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System