You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your good name, Please?

USER: My name is Raymond Parker want to book a single connecting flight, can you please assist in that?

ASSISTANT: Sure, We can assist you in that. May I know your airport codes, Please?

USER: Sure, the travelling airport codes are ATL and DCA.

ASSISTANT: May I know your travel dates, Please?

USER: My travel preferred dates are 02/01 and 02/03.

ASSISTANT: May I know, What is your origin airport code?

USER: My origin airport code is ATL.

ASSISTANT: OK. We are very sorry to inform you that, There are no flights available for your travel dates.

USER: Not an issues.

ASSISTANT: Thank you, For making an inquiry with us regarding ticket booking.

USER: Thank you for your valuable information.

ASSISTANT: Have a great day.