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 day were you thinking of traveling on? Sentence2: Yes, the address is Cambridge passenger crusiers, jubilee house. Their phone number is 01223902091. I'm not sure about the entrance fee. You could call them and find out? Sentence3: The duration is 88 minutes. Is there anything else I can help you with? Sentence4: What's the duration of the trip? Sentence5: welcome and thanks for using our services. Sentence6: On Thursday. I need to arrive by 20:45 Sentence7: Can you give me the phone number, address and entrance fee? Sentence8: As mentioned, it is TR7360. It leaves liverpool on thursday at 17:39. It arrives at cambridge at at 19:07. The cost is 16.60 pounds per ticket. Sentence9: I need a train to take me to Cambridge departing from London Liverpool Street. Sentence10: Okay. Thank you for your time! Sentence11: we have riverboat georgina Sentence12: Yes, I also need a boat type of place to go in the north. Sentence13: Have a great day. I am all set. Goodbye. Sentence14: Before I let you go, has everything been resolved or are there other questions? Sentence15: That would be fine. I'll need the travel time, departure time, and train ID, please? Sentence16: May I suggest train TR7360 arriving at 19:07? Question: Who has spoken the sentence 7? (A) User (B) System
Output: 


Answer: (B) System