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'm heading to Norwich and need to leave after 11:15 from Cambridge Sentence2: Yes, please. I will need their address and what price range it is in. Sentence3: You're welcome. Have a great time! Sentence4: I still need to know if Aylesbury House has free parking. Sentence5: The train was booked for 7 tickets departing at the correct time and providing the reference number. Also, more info is needed about a hotel. Sentence6: Thank you. We will. Sentence7: Yes, as a matter of fact, I also need a place to stay. Sentence8: Alright. What day would you like to stay, how many nights and how many people? Sentence9: Sure, we have two hotels for you aylesbray lodge guest house, and rosa's bed and breakfast. can I book one of these for you today? Sentence10: That's it, you have been very helpful! Thank you! Sentence11: There are many different hotels in Cambridge, do you have an area or price range in mind? Sentence12: Certainly. This guesthouse is located at 5 Mowbray Road and is in the moderate price range. Is there any other information you need? Sentence13: Let us know if you need anything else. Goodbye! Sentence14: There are 13 trains. The one that leaves closest to your requested time is the TR5949, which leaves at 11:36. Does that interest you? Sentence15: Could we try the Aylesbury House? Sentence16: I need a train from Cambridge on Tuesday Sentence17: Actually I need more information on the hotels. Does Aylesbury House have free parking? Sentence18: You've been extremely helpful. And I hope you have a wonderful day. Sentence19: The Aylesbray Lodge has free internet and free parking. Would you like a reservation, or perhaps I can give you their contact information? Sentence20: Thank you for using our service. Have a great day! Sentence21: I have booked the TR5949 for 7, departing from Cambridge at 11:36 and arriving in Norwich at 12:55. Reference number: UR9DKTIK . Anything else I can help you with? Sentence22: There are plenty of those! Where are you headed, and at what time? Sentence23: Yes, that would be great! I need 7 tickets, please. Oh, and the reference number. Sentence24: Is there anything in the south with a star of 4? It doesn't have to have free parking. Question: Who has spoken the sentence 12? (A) User (B) System
Output: 


Answer: (A) User