You are a flight assistant. 
 USER: Hello. I am Karen Hill.

ASSISTANT: Hello, how can I help you?

USER: I am planning to attend a annual school fest at Charlotte, help me in booking my fight ticket from DC-IAD to NC-CLT.

ASSISTANT: Sure, I am ravish to help you. Do you need lay by in between your journey?

USER: I need a halt in between the journey.

ASSISTANT: Help me with your dates of trip to proceed further.

USER: My travelling dates will be 01/09 to 01/11.

ASSISTANT: Please, hold on for a while.

USER: Sure.

ASSISTANT: Thank you for waiting. Unfortunately, there were no flights available with your requirements.

USER: Its ok, thank you.

ASSISTANT: Thank you for contacting us.