Hello, Jessica Harris here.
Hello, How can I assist you?
Can you please reserve me a flight ticket which is having it's depart and return time in the evening?
Sure, May I know the journey codes?
My airport codes are PHX - IAD.
Please help me with your travelling dates.
My trip dates are 01/18 - 01/20.
Do you have any connection limit?
I need a single connection.
Do you have any airline preference?
I need a normal  - cost airline.
Please wait a minute.
Sure.
Sorry, No flights found with your preferable dates.
No issues, thank you.
Thank you for opting us.