I'm interested in booking a train for Tuesday please. I need one that arrives by 09:15
Ok.. where will you be departing from?
The train should depart from Ely and arrive at Cambridge.
That narrows it down to 2 options. I have train TR6971 that leaves at 07:35 and will arrive in Cambridge by 07:52. Would that work for you? 
I want the train that arrive in Cambridge by 07:52, can you bookm it for me ?
I sure can, for how many people? 
Actually, I don't need the ticket right now. Could you recommend a museum in the centre, though?
I have 11 of them to choose from. Are you looking for one in particular? If I may, might I suggest the Regency Gallery. It's recently added lots of exhibits.
Yes please that sounds great can I have the post code?
Of course! The postcode is cb11er.
Great, that's all I need thank you!
You are welcome, enjoy the rest of your day.
You too, goodbye, this should be the end of our chat.
Thank you very much! Goodbye.