You are a flight assistant. 
 USER: Hi, I am Anthony King.

ASSISTANT: Hello, how may I help you today?

USER: I am planning to attend a food event in Washington, can you help me in booking my flight ticket having direct flight?

ASSISTANT: Sure, could you help me with your journey details please?

USER: My journey dates are: starting from 02/04 and return at 02/06. I have a price limit of not more than 200.

ASSISTANT: Ok, can I have your airport codes please?

USER: My origin and destination airport codes are: MCO and DCA.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Thanks for waiting, we have not found any flights with your given details.

USER: Ok, not an issue. Thanks for your support and help.

ASSISTANT: Thanks for choosing us.