Hello.
user
Hello. How can I help you?
assistant
I would like to book a ticket from DCA to PHL, can you help me?
user
Could you please provide your travelling dates?
assistant
I am planning to travel on 12/20 and return on 12/22.
user
May I know your name to proceed further?
assistant
Debra Davis here.
user
Sorry, there is no flight available at your request.
assistant
No problem.
user
Thank you for reaching us.
assistant
Welcome.
user