Hello.
Hello, what can I do for you today?
Can you  please book a flight ticket from IAD to SFO?
Sure, may I know your travel dates please?
Thank you. I have planned my travel  dates as Mar 19 and Mar 21.
Do you want to fly in economy class or business class?
I am ok with any class but I would like to return in morning time so please make sure that.
Any other preferences you have?
I am looking for single connecting flight.
Can you mention your name to proceed further?
Sure, myself Sandra Taylor.
Sorry, no flights found as per your requirement.
Oh! It is sad to hear. Anyway, thank you for your time.
Thank you for contacting us.