Hello.
user
Hello, how may I help you?
assistant
I am Anna Green. I am planning to attend music concert at HOU, can you please help me with booking a flight ticket from IAD?
user
Sure, may I know your travelling dates please?
assistant
Sure, I would like to take off on 06/22 and return on 06/24.
user
Sorry to inform you, there is no flight available as per your request.
assistant
Ok, no issues. Thank you for checking.
user
Most welcome.
assistant