You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I was planning a trip to Seattle, WA -SEA on 07/01 from Washington DC - IAD on 06/29.

ASSISTANT: May I know your price and connection limit ?

USER: Price limit is 500 and I need a direct flight.

ASSISTANT: May I know your good name please?

USER: My name is Nicholas Smith.

ASSISTANT: Thanks for the details.

USER: You are welcome.

ASSISTANT: please wait for a minute,I will check the availability of flights and let you know.

USER: OK.

ASSISTANT: Sorry to inform you that there is no flights found by the given details.

USER: Anyway, thanks for being with me.

ASSISTANT: Thank you for availing with us.