You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Alexander Carter.

ASSISTANT: How may I assist you at this moment Carter?

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

ASSISTANT: Sure, I will help you with that. Can you please provide your planned dates of travelling?

USER: Sure, I would like to take off on 11/23 and return back on 11/25.

ASSISTANT: Please wait a moment to check the flights availability in your route.

USER: Ok, but please make sure that the connection limit is 0.

ASSISTANT: We regret to inform you that there are no flights available in your planned route with your planned dates of travelling.

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

ASSISTANT: Thank you for reaching to our services, hope you have a great day.

USER: You are welcome.