You'll have *plenty* of time = You'll have a little time. / You'll have a lot of time
You'll have a lot of time.
If you need a taxi, I'll *book* one for you. = I'll make the taxi reservation / I'll pay for the taxi
I'll make the taxi reservation.
_____ by one of your former colleagues. (I was given your details… , My name's Lina, and I work…)
I was given your details by one of your former colleagues.