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 was my please. If I can help with anything else just let me know. Have a great trip. Sentence2: What time would you like to leave or arrive? Sentence3: I have two entries here, both in the centre. I recomend dojo noodle bar. Do you want me to book? Sentence4: Sure the cost of the journey is 17.60 pounds and you confirmation number is X9OY1UCU . Sentence5: Yes please, I'm also looking for an Asian Oriental restaurant within the cheap range. Can you find one for me? Sentence6: I am coming to Cambridge and cannot wait to eat at some of your loal restaurants. Can you help me find a train out after dinner? Sentence7: then train number TR3976 should be ok. can I book? Sentence8: I will be departing from ely and arriving in cambridge. Sentence9: Actually just provide me with the address for that location Sentence10: I certainly can. What are your departing and arriving stations? Sentence11: For dojo noodle bar, address is 40210 Millers Yard City Centre, postal cb21rq, can I assist with anything else? Sentence12: Yes, it will be for 4 people. Sentence13: That is all I need, thank you for your help. Sentence14: Absolutely. Your reference number is X9OY1UCU, and that comes to 17.6 GBP, payable at the station. Is there anything else I can help you with today? Sentence15: I would like to leaver after 9:30. Sentence16: Could you book it for four then? Question: Who has spoken the sentence 9? (A) User (B) System
Output: 


Answer: (B) System