U: I need a train that leaving Cambridge for Ely.

S: What day and time would you like to arrive in ely?

U: I would like to leave on Tuesday and arrive by 13:15.

S: There are several options available that could suit you.  The arrival times are anywhere from 06:07 to 12:07.  What time do you want to leave?

U: I'd like the reference number please.

S: I'm sorry, I can not give a reference number until we book you a seat.  There is a train departing at 07:50 , would you like to book that now?

U: Can I get one ticket on the train that arrives at 12:07?

S: Not a problem. Do you need the reference number?

U: Yes, I would like the reference number, please. I am also looking for a guesthouse as well.

S: a and b guest house located at 124 tension road phone number 01223315702 and is located in the east side.

U: Is it 4 stars and is there wifi?

S: It is four starts and it does have wifi.

U: Does this guesthouse have good breakfast options?
S: Yes, guests have good things to say about the breakfast at A and B. Would you like me to reserve a room for you?