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: TR2634 leaves at 21:00 and arrives by 21:51. Would you like me to book that for you? Sentence2: Sorry, I'm actually not interested in a booking today, I just needed a train ID. I think that will be all! Sentence3: I need to go to London Kings Cross from Cambridge. Sentence4: I have booked Allenbell for yourself and two additional guests for five days. The reference number is N625QW6Q . Can I assist you with anything else? Sentence5: I have 10 trains leaving on that day. Do you have a time of arrival or departure please? Sentence6: I need to book for 3 people for 5 nights starting Wednesday. Can you give me a reference number? Sentence7: Yes, that will work. Thank you for your help! Sentence8: There are 10 cheap places that include free wifi. Is there a specific area you would like to stay in? Sentence9: Hi! I'm looking for a cheap place with free wifi. What are my options? Sentence10: How many people will be in your party on the train? Sentence11: Where will you be departing from and where will you be arriving? Sentence12: Thanks, I also need to find a train for Monday. Sentence13: I would like to leave after 19:00, other than that, I have no other preference. Please provide me with the train ID of one of these trains. Sentence14: I have 9 potential guesthouses for you to chose from. How about the Allenbell on the east side? Sentence15: Glad to help! Please enjoy your stay in Cambridge! Sentence16: No particular area, but I'd like it to be a guesthouse. Question: Who has spoken the sentence 6? (A) User (B) System
Output: 


Answer: (A) User