You are a flight assistant. 
 USER: Hi,. I am Emily Smith.

ASSISTANT: Hello, How may I help you out today?

USER: I am planning to attend an conference in my head office in Washington, DCA.

ASSISTANT: Ok.

USER: Can you help me in booking me a flight with a direct flight?

ASSISTANT: Sure, I can check the flights with your request.

USER: Thank you.

ASSISTANT: Please send me the source point.

USER: My source airport is Charlotte, CLT.

ASSISTANT: What are your travel dates?

USER: 07/06 - 07/08 are my willing dates for travel.

ASSISTANT: Ok. Please wait, I will let you know.

USER: Sure.

ASSISTANT: Thanks for your time.

USER: Ok.

ASSISTANT: Unfortunately no direct flights are available on your route.

USER: Ok, Thank you for the information.

ASSISTANT: Thank you.