Hi. I am Justin King.
user
Hello, how may I aid you better?
assistant
 I want to do research on a project at NASA space centre at Houston, TX - IAH.
user
OK.
assistant
Can you please hold me a flight ticket from Washington, DC - IAD?
user
Sure, may I know your travel dates please?
assistant
My trip dates are 02/27 - 02/29.
user
Sorry, no flights are available. Thank you for approaching us.
assistant
It's ok, thank you.
user