Hello.
Hello, how can I aid you for today?
Can you please book a flight ticket from DCA to SEA?
I am happy to help you about your flight ticket booking. Can you please let me know your planned dates of journey?
Thank you. I have planned my travel dates as July 29 and July 31.
Would you like to have a connecting flight for your journey?
I am looking for single connecting flight so please check with that.
Is there any other requirement for your journey?
No, I do not  have any more specifications.
Can you please let me know your name for booking purpose?
Sure, myself Matthew Hall.
I regret to say this Matthew Hall, there are no flights which travels to your region on your planned dates of journey.
Oh! It is sad to hear. Anyway, thank you for your time.
You are welcome, thank you for reaching us. Hope you have a nice day ahead.