You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am Frank Walker from Washington. I have to attend a cultural festival in Seattle to participate in dance event so please book a flight ticket from Washington.

ASSISTANT: Sure, I am gleeful to help you out. Please provide me your location airport codes.

USER: Sure, I would like to travel from DCA to SEA.

ASSISTANT: Please share me your trip dates to check the best flight in your route.

USER: Sure, I have planned my travel dates as 06/14 and 06/16.

ASSISTANT: Sorry Frank Walker, there is no flight with your intent in our route.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for reaching us.

USER: Most welcome.