Hello, I am Jacob Green.
Hello. How can I serve you?
 Will you help me to book a flight ticket from SEA to IAD to meet my school friend after a long time?
Sure. May I know your travelling dates?
My depart is on 12/04 and return on 12/06.
Do you have any preferences?
My price limit is 5000.
Thanks for your details. There is no flights found on your data.
No problem, thank you.
Thanks for choosing us.