Hello.  My name's Laura Harris.  I'd like to book travel from Oakland OAK to Washington D.C. IAD in order to attend a conference.
Oh sure, I can help you with that. May I ask for what dates should I look the flight for?
I need to leave on the 21 of April and return the 23rd of that same month.
Okay. I'll check it for those days. I found one flight for you. Its delta airlines costing you 200. Is that fine?
How many connections are there?
There is just 1 connecting flight.
That'd be perfect.  Would you please book that flight for me?
Yes sure. I would do that. Hey Laura, your flight has been booked. I would like to apologize for the delayed replies though.
That's quite alright.  Thank you so much for your assistance.
You are welcome. have a safe journey.