You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Can you please help me to search a flight from Washington DC-DCA?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: The travelling dates are 11/17 to 11/19.

ASSISTANT: Please provide your destination airport codes.

USER: The destination airport code is NC-CLT.

ASSISTANT: Please give me a moment. Please provide your name.

USER: Sure, take your time.

ASSISTANT: Please mention the name.

USER: My name is Carolyn Wright.

ASSISTANT: Thanks for waiting, there is no flights available under your preferable details.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Welcome, have a great day.