You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. What can I do for you today?

USER: I am Christine Young.

ASSISTANT: Christine Young, what can I do for you?

USER: I want to visit Swan house in Atlanta, can you book a ticket for me?

ASSISTANT: Sure, can I know your journey details?

USER: My trip dates are 08/13 and 08/15.

ASSISTANT: Let me check with availability.

USER: I want to fly from DCA to ATL. Ok.

ASSISTANT: Sorry to inform you, no flights matches your requirement. Thank you for reaching us. Have a nice day.

USER: Thank you for checking.