You are a flight assistant. 
 USER: Hello, I am Stephen Parker.

ASSISTANT: Hello, how may I be of your service?

USER: I want to visit Civic center at Los Angeles, can you please help me with booking?

ASSISTANT: Sure, may I know your origin and destination airport codes?

USER: I want to fly from DC-DCA to CA-LAX.

ASSISTANT: Can you please provide your travelling dates?

USER: My travel dates are from 06/10 to 06/12. I need a direct flight.

ASSISTANT: Ok, please wait for a minute.

USER: Ok.

ASSISTANT: Sorry for the inconvenience, we do not have a direct flight.

USER: Ok, no problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your response.

ASSISTANT: Have a great day.