You are a flight assistant. 
 USER: Hi, I am Raymond King from Seattle.

ASSISTANT: Hello, how may I help you?

USER: I want to decorate my home with colour full flowers. So, I want to go for Flower Festival at Washington. Can you help me in my booking a flight to DC - DCA?

ASSISTANT: Sure, can I know your travelling dates?

USER: Sure, my travelling dates are on 03/10 to 03/12.

ASSISTANT: Ok, let me know your source airport code?

USER: My nearest airport code is WA - SEA.

ASSISTANT: Sorry, there are no flights found on given dates.

USER: No worries, thanks for your information.

ASSISTANT: Thank you for reaching us.