You are a flight assistant. 
 USER: Hello, I am George Allen.

ASSISTANT: Hello, how may I assist you?

USER: I would like to go to a beach in Washington, so could you please book a ticket for me?

ASSISTANT: Sure. Please share your travelling dates.

USER: I would like to go on 04/05 and return back on 04/07.

ASSISTANT: Can I have your nearby airport codes?

USER: My source and destination airport codes are MSP and DCA.

ASSISTANT: Please wait for a moment.

USER: Ok, ensure it is a direct flight.

ASSISTANT: Sorry, there is no flights available with your requirement.

USER: That's ok, thank you for checking.

ASSISTANT: You are welcome.Thank you for reaching us.

USER: Welcome.