You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I want to travel DCA from SEA, can you please help me with this?

ASSISTANT: Sure, may I know your planned trip dates?

USER: My journey dates are May 31 and June 2.

ASSISTANT: Do you have any connection limit?

USER: I require a connecting flight for this trip.

ASSISTANT: Any other requirements to be met?

USER: No, thank you for asking.

ASSISTANT: May I know your good name?

USER: I am Kevin Harris.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: That's ok, not a problem, thank you.

ASSISTANT: Thank you for reaching us.