Hello.
Hello, how can I help you today?
I am Joshua Thomas. I am planning to visit Houston Zoo which is in IAH.
Nice meeting you Thomas.
Can you help me in booking a ticket from IAD?
Sure, can I have your travelling dates please?
My travel dates are from 10/19 to 10/21.
Sorry to inform you, there is no flight available which is travelling to your destination on your provided dates.
It's fine. Anyway, thank you for your help.
It's my pleasure. Have a nice day.