U: I need a train that will be leaving from cambridge by 16:30, can you help me with this please?

S: Where would you like to go and on what day?

U: I need the train to leave on Monday before 16:30 for Ely.

S: There are 10 trains leaving before 16:30. What is the earliest you'd like to leave?

U: The latest I can leave to arrive by 16:30 please.

S: The last train that will arrive by 16:30 is train TR7177. It departs at 15:50 and arrives at 16:07. Would you like me to book a ticket for you?

U: Yes, but how much is the ticket going to be and how long is the travel time?

S: The travel time is 17 minutes and the price of the ticket would be 4.40 pounds. Would you like me to book that for you?

U: Yes, and once I am in Ely I need a place to stay on the north side of town with at least a 1 star rating, and has wifi.

S: There are 11 possible selections in those parameters, do you have a preferred price range? Would you like a guesthouse or hotel?

U: Any price range and area is fine. But, is it possible to look for a 3 star hotel or guesthouse instead.

S: Hamilton lodge is a guesthouse in the north with a 3 star rating and moderately priced. Would you like me to book a room for you?

U: Are the rest rooms sanitary?
S: Unfortunately, some guests that have previously stayed at the Hamilton Lodge mentioned having gross, unsanitary bathrooms.