You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you now?

USER: I am Nicole Lee here, my planning is from CLT to DCA, can you please reserve my ticket?

ASSISTANT: Sure, can you please mention the travelling dates of your journey?

USER: Ok, my dates of journey is from 09/28 to 09/30.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I want a direct flight.

ASSISTANT: Sorry, there is no direct flight.

USER: That's ok, thank you.

ASSISTANT: Thank you for approaching us, have a nice day.