You are shown a conversation between a user and system. Identify who has spoken the indicated sentence based on the conversation.

Ex Input:
Sentence1: In the centre yes please. Sentence2: Can you give me the contact number for that taxi you booked? Sentence3: No, thank you. That all sounds good. Sentence4: I need info on the Cambridge and County Folk Museum please. Sentence5: At what time would you like to leave the museum? Sentence6: Anything else I can do for you? Sentence7: What type of car have you booked? Sentence8: I'm also looking to book a taxi between the two locations. Sentence9: Ok, it's called Ali Baba. How many people will be in your party? Also, what day and time would you like? Sentence10: Okay, your table is booked. The reference number is 7GD7F8A8 . Anything else I can do for you? Sentence11: Yes, I will have one pick you up Sentence12: A grey lexus will be picking you up. Can I assist you with anything else? Sentence13: I am sorry but there is not a lebanese restaurant in the west area, but I found one in the centre. Would you like me to book a reservation? Sentence14: Okay do not hesitate to call us if you need something else. Sentence15: No thank you. But thank you for all your help. Sentence16: The museum is located in the west side of town at 2-3 Castle Street. The entrance fee is 3.50 pounds. Their phone number is 01223355159. Shall I connect you? Sentence17: Your booking is completed. You will be picked up by a grey lexux. Can I help you with anything else today? Sentence18: could i get a taxi as well? Sentence19: Absolutely, the contact number for the taxi that I have booked for you is 07503689471. Is there anything else I may assist you with? Sentence20: I would like to make a reservation for 2 people at 19:30 on Tuesday. Sentence21: I just want to make sure I am at the restaurant by 19:30. Sentence22: Yes, I am also looking for a nice, moderately priced Lebanese restaurant in the area. I'd prefer it to be within walking distance of the museum. Question: Who has spoken the sentence 18? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: I'm departing from the oak bistro. Sentence2: I have the taxi ready for you Sentence3: I would like to leave after 17:00. Sentence4: Hi, I need a tax to queens' college please. Sentence5: What time would you like to leave? Sentence6: What is your departure site? Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:
Answer: (A) User


Ex Input:
Sentence1: I would like to go to ely, and arrive by 17:45. Sentence2: The address is Little Saint Mary's Lane. Is there anything else you need to know? Sentence3: No thank you that will be all Sentence4: Can I get the address, please? Sentence5: i want to leave as late as possible and still arrive by 17:45. Sentence6: I can book you on the TR6745 leaving at 15:50 and arriving at 16:07. Sentence7: What about architecture in the centre? Sentence8: It was nice talking to you. If you need assistance in the future, please don't hesitate to text us again. Goodbye! Sentence9: How many tickets will you need? Sentence10: Do you have a time you would like to leave? Sentence11: Great. I also need a multiple sports attraction in the centre of town. Sentence12: I need to leave from Cambridge on Wednesday. Can you help me find a train? Sentence13: That sounds wonderful! Sentence14: That train will leave at 15.50 and arrive at 16:07. the cost is 4.40 pounds. Sentence15: I don't need a ticket, I just need to know the price and travel time, please. Sentence16: I recommendvLittle saint mary's church don't let the name fool you, they are large and have a lot to see, would you like more information? Sentence17: We have several that fit the bill, do you have a destination? Sentence18: i dont happen to have any multiple sports venues in the centre. would you like me to find something else? Question: Who has spoken the sentence 2? (A) User (B) System

Ex Output:

Answer: (A) User