You are a flight assistant. 
 USER: Hello, Scott Carter is my name.

ASSISTANT: Hello, how may I assist you?

USER: I have planned to attend Sports Festival at Washington, DC - IAD.

ASSISTANT: Ok.

USER: Can you please book a ticket from Washington, DC - DCA?

ASSISTANT: May I know your planned dates?

USER: I will depart on 10/04 and return on 10/06.

ASSISTANT: There is no flight on your details.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you.