You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Steven Davis.

ASSISTANT: How can I assist you today?

USER: I am planning to attend music concert at SEA, can you please help me with booking a flight ticket from DCA?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: Sure, I would like to take off on 08/12 and return back on 08/14. Make sure that the connection limit is 0.

ASSISTANT: Please give me a moment.

USER: Sure, take your time.

ASSISTANT: Thanks for waiting, there is no flights available under your preferable details.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Welcome, have a great day.