U: Any trains leaving after 18:00?

S: There are lots of trains that leave after 18:00. Where would you like to travel?

U: I would like to travel to the Stansted Airport and leave from Cambridge.

S: Great! That narrows it down a lot. What day will you be leaving?

U: We will be leaving on Tuesday.  Please book four seats on the train and provide the reference number.  Thank you!

S: OK, you have 4 tickets reserved on TR9495, leaving Cambridge at 18:40 on Tuesday. The total fee at the station will be 40.4GBP, and your reference number is 4LL98NYC.

U: I also need a moderate priced guesthouse.

S: Sure. I can assist you with that request. How many nights will you be staying?

U: i only need the details. is it a 3 star?

S: alpha-milton guest house is the only 3 star hotel fitting your description.

U: Do you know if the Alpha-Milton Guest House has very clean rooms?
S: According to two guests at Alpha-Milton Guest House, the rooms were not as clean as they should have been.