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: What time will you need to be traveling? Sentence2: You're welcome, have a good day Sentence3: Yes, here you go saint andrew's street and 01223334900 Sentence4: Okay the TR2473 leaves at 14:24 and arrives by 14:52. It's 28 minutes. Sentence5: Welcome. Is there anything else that I can help you with? Sentence6: How about a college instead? Sentence7: what type of attractions are yopu looking for? Sentence8: I would like to arrive by 15:45, need the departure time and train ID. Sentence9: I am coming in from the Stansted Airport. Sentence10: Can I get their address and phone number please? Sentence11: Okay, from where are you departing? Sentence12: Thank you for your help. Sentence13: Christ's College meets your criteria. Would you like more information? Sentence14: Whatever it is, there is not a spot for in the centre, shall I search for something else? Sentence15: No, that will be all. Thanks so much for your time. Bye. Sentence16: Thanks! I'm also looking for an attraction in the centre area. Sentence17: Nope. It's free! Sentence18: Hey there, I want to get a train to Cambridge for Thursday please Sentence19: multiple sports please. whatever that is. Sentence20: Thank you. Is there an entrance fee? Question: Who has spoken the sentence 17? (A) User (B) System
Output: 


Answer: (B) System