You are a flight assistant. 
 USER: Hello. This is Dennis Evans.

ASSISTANT: Hello, How can I serve you?

USER: I am planning to visit Kennedy park, which is located in Oakland CA-OAK.So I would like to fly from Seattle. Can you please aid me in booking a flight ticket?

ASSISTANT: Sure, May I know the source code?

USER: My source code is WA-SEA.

ASSISTANT: Please help me with your travel dates.

USER: My travel dates are 08/24 and 08/26.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for availing us.