You are a flight assistant. 
 USER: Hello, I am Jason Roberts.

ASSISTANT: Hello Robert , How can I  assist you?

USER: I want to visit Washington, DC - DCA for movie locations.

ASSISTANT: May I know the source point with airport abbreviates?

USER: My journey starts from Dallas and Fort Worth, TX - DFW on 03/09.

ASSISTANT: May I know the return date?

USER: I would like to return on 03/11. Make sure that I need direct flight with price 500.

ASSISTANT: Sure, Wait a minute I will check and get back to you.

USER: Ok.

ASSISTANT:  Sorry to tell that there is no directly flight available.

USER: Ok, no issue. I will check another option. Thanks for your information.

ASSISTANT: Could I continue with single connection?

USER: No I need direct flight.

ASSISTANT: Ok,Thank you for approaching us.

USER: Thanks for your service.