You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: I would like to book a direct flight from SEA to DCA, can you please help me out?

ASSISTANT: Sure, I will help you in booking the ticket.

USER: Thank you.

ASSISTANT: May I know your travelling dates please?

USER: I am travelling on these dates 03/14 and 03/16.

ASSISTANT: Sorry, there are no flights found in our database.

USER: Ok no issues, thank you for your services.

ASSISTANT: Thank you for choosing us. May I know your name please?

USER: I am Paul Davis.

ASSISTANT: Thank you.