Good morning! Can you help me get a taxi to take me from Clare College to Cambridge that gets there by 18:00?
Yes, I have a car for that time, would you like me to book it?
Please. Can I get the contact number and car type for that?
Yes, look out for a grey ford. The contact number is 07562472408. May I help with anything else?
Actually, can I change the destination to Christ's College?
Ok, so that was a cab leaving from clare college and going to christ's college arriving there at 18:00?
Yes. Could I have the contact number and car type for this trip?
Yes, it will be a grey Ford and the contact number is 07562472408. What else can I help you with? 
That takes care of what I needed today. Thanks and have a good day. 
Thank you, goodbye.