IM looking for a train that arrives by 9:15 and leaves Tuesday 
What will be your departure location and destination?
I'm leaving Cambridge and am going to stansted airport.
What time would you like to depart?
departure time does not matter as long as it arrives by 9:15.  Can you give me the travel time and price please?
The earliest is the TR1656 which leaves at 05:40, arriving at 06:08. Travel time on that is 28 minutes, and the price is 10.10 pounds. What else can I help with?
I'd like to visit a theatre in the east part of town.
There are unfortunately no theaters located in the east. Would you like me to try something else?
What about a park?
There is one park, Cherry Hinton Water Play. The address is Cherry Hinton Hall, Cherry Hinton Road. Admission is free. Is there anything else I can do?
No, that is exactly what I was looking for.  Thank you for your help!  Goodbye!
Thank you for choosing Help Desk. Goodbye.