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'd like to book table at the royal spice for 6 people at 19:45 Tuesday. Sentence2: I was able to book your taxi. You will be in a White Skoda. If you need to contact them, the number is 07145741426. Can I help with anything else? Sentence3: There are many matches to your request. Do you have a preference in area or star rating? Sentence4: I have 11 guesthouse hotels fitting this criteria. Do you have any other preferences? Sentence5: I would prefer a 4 star guesthouse please and I'll need the area and address please. Sentence6: The booking was successful and the table will be reserved for 15 minutes. Your reference number is EQ2EWQ22 . Sentence7: I have no preference for area but I am looking for something with a 4 star rating and moderately priced. Sentence8: I recommend Acorn Guest House in the north. The address is 154 Chesterton Road. Would you like me to book it for you? Sentence9: No, no other preferences. What would you recommend? Sentence10: Ok, can you send me the address and area of Aylesbray lodge? I am also looking for a restaurant called royal spice. Sentence11: Aylesbray Lodge is in the south part of town and the address is 5 mowbray road. Sentence12: No that's all I need. Thank you! Sentence13: Can I book a taxi from Acorn Guest House to Aylesbray Lodge? It needs to get there by 19:45 Tuesday. Sentence14: I'd like a place to say that is a guesthouse type, and includes free wifi. Sentence15: Aylesbray lodge guest house matches your criteria. Would you like me to book that for you? Sentence16: You are welcome. Please let me know if I can be of any other assistance. Enjoy your visit. Sentence17: I prefer something a little more south. Sentence18: There are 11 matches that fit your criteria. Do you have any other preferences? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System