Hi.
user
Hello. How can I help you?
assistant
I am Michael King. Can you reserve a seat for me from DCA to LAS?
user
Sure, I will help you to book a flight ticket. Can you please provide me your travelling dates?
assistant
Thanks, I am planning to take a flight on 02/19 and 02/21.
user
There is no flight is available for you on your route.
assistant
Oh! so sad. Anyway thanks for checking.
user
Welcome. Thank you for choosing us.
assistant