You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you today?

USER: I want to book a flight on Jan 27 to attend a meeting. Can you find me flight to Dallas?

ASSISTANT: Sure, let me know your trip dates please?

USER: I will fly on Jan 27 and return on Jan 29.

ASSISTANT: May I know your source airport code?

USER: My source point is CLT and my destination is DFW.

ASSISTANT: Any requirements to be met?

USER: I prefer a connecting flight.

ASSISTANT: Can you mention your name please?

USER: My name is Katherine Miller.

ASSISTANT: Sorry, no flights found as per your requirement.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for contacting us.