You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I best aid you today?

USER: I am Stephanie Brown. I want to book a flight on 06/12 and return on 06/14, so can you help me with booking?

ASSISTANT: Sure, may I know your airport abbreviates?

USER: Yes, my airport codes are DC-DCA and NC-CLT.

ASSISTANT: Do you need any lay by in between journey?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait for sometime.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no flight found on your requested dates.

USER: That's ok. Thank you.

ASSISTANT: Thanks for communicating us, have a good day.