Hi.
user
Hello. How can I aid you today?
assistant
I am Joshua Mitchell want to visit IAD, can you book a ticket from IAH?
user
Sure, I am happy to help you. May I know your travelling dates?
assistant
Sure, my travelling dates will be 06/13 and 06/15.
user
Sorry to say that, there are no flight's available based on your travelling dates.
assistant
That's ok, thank you for checking.
user
Thank you for contacting us. Have a great journey.
assistant