Task-oriented dialogue about: taxi

I need a taxi departing from tang chinese.
Ok, what is your destination?
I need to get to Downing college.
Great. Now I will just need a time.
I need to arrive by 19:30
Alright. I have a white bmw and the contact number is 07454674026. Anything else?
No that is all I needed.
I'm sorry, I thought you wanted to leave at 19:30. You are booked for a yellow bmw with the contact number 07816577086 arriving at 19:30.
Great. Thank you very much.
Can I help you with anything else?
No, that's it. Thanks.
Thank you goodbye