Hello, Thomas Parker here.
user
Hello. How may I help you out?
assistant
I want to attend a musical concert, so please book my ticket from IAH to DCA.
user
Sure, I will help you in booking the ticket. May I know your travelling dates please?
assistant
My travelling dates are 09/10 and 09/12.
user
Sorry, there are no flights found.
assistant
No issues, thank you for your service.
user
Thank you for reaching us.
assistant