U: I need a train that departs from cambridge and arrives at london liverpool street. Can you help me?

S: I'd be happy to. Do you have a specific date and time for your departure?

U: I want to leave on Saturday and should arrive by 18:00, I have a doctors appointment to see to.

S: The TR4466 arrives in London Liverpool Street at 15:27, would that be acceptable?

U: Yes what is the price, departure time, and travel time?

S: It is 13.28 pounds, will arrive 15:27, and the travel time will be 88 minutes. Can I help you with anything else?

U: Yes, I'll also need a place to stay in the south and would prefer a guesthouse.

S: ok I have a few options. Is there a price range you would like to stay at?

U: No specific price range, but I do need free parking.

S: Rosa's Bed and Breakfast is a great one in that area and cheap. It includes free parking and wifi. Would you like me to book you a room?

U: Is it near any attractions?
S: Based on the opinion of past guests at Rosa's Bed and Breakfast, the B&B is close to things that they wanted to visit.