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: Would you like to look into a hotel? Sentence2: bridge guest house is a 3 star guesthouse in the south part of town with free parking and wifi. Can I book it for you? Sentence3: TR4748 deperts at 13:17 and arrives 14:08 Sentence4: The travel time for TR4748 is 51 minutes. Sentence5: thanks! what is the travel time? Sentence6: You are very welcome. Good bye. Sentence7: I am going to Cambridge and arrive by 18:45. I need the train ID, travel time and departure time. Sentence8: I am planning a trip in Cambridge. Sentence9: Yes, please book that one. Sentence10: I'm sorry, I don't need to book it at this time but could you please provide me the phone number to Bridge guesthouse? Thanks Sentence11: uhm, no. that's your job, weirdo. also, i need a train. Sentence12: Thanks you too! Bye! Sentence13: Have a great day. Sentence14: Yes I would like to book that one. Sentence15: Where will you be travelling to? Sentence16: Ok, I do need a hotel after all. I need 3 stars and it should be moderately priced. Sentence17: There are some lovely 3-star guesthouses in Cambridge. Which area would you like results for? Sentence18: I don't have a preference. Why don't you pick one for me. Sentence19: Thank you. That is all that I need for today. Sentence20: 01223247942. What other info may I provide about the Guest house? Question: Who has spoken the sentence 5? (A) User (B) System
Output: 


Answer: (B) System