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: Their ID is TR1039. Sentence2: OK, I have you booked at alexander bed and breakfast for 4 nights. The Reference Number is : 741JC8HU . Anything else I can help you with today? Sentence3: Yes please. Could you also give me the train ID? Sentence4: Ok, thank you. I also need some help finding a guesthouse. I also would like free wifi. Sentence5: There is a train at 13:35 that cost 4.40 pounds. Would you like to take it? Sentence6: We've got a lot of options for guesthouses, what area do you want to stay in? Sentence7: That takes care of it. Thank you very much. Sentence8: I'd like to depart from Ely on Wednesday after 12:15. Sentence9: I need a train to cambridge Sentence10: Yes, that sounds good. Sentence11: That's fine, I'd like to book it for 4 nights then. Sentence12: You are welcome. Have a very nice stay. Sentence13: The booking for Alexander Bed and Breakfast was denied for 8 guests staying five days, starting on Wednesday. Would it be possible to plan a shorter or longer stay? Sentence14: Please be specific about when you are leaving and by what time you intend to arrive to help me to narrow down. Sentence15: I'd like a cheap place in the centre for 8 people and 5 nights starting Wednesday. Sentence16: Alexander Bed and Breakfast, 56 Saint Barnabas Road is inexpensive and rated 4 stars. Would you like me to book that? Sentence17: I would like to stay in Cambridge please. Sentence18: Ok, centre, north, east, west, or south side? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System