You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you today?

USER: Can you please help me in booking my flight ticket from CLT to DEN?

ASSISTANT: Sure, can you please let me know your depart and arrival dates of the journey?

USER: My travelling dates are Apr 07 and Apr 09.

ASSISTANT: May I know your name please?

USER: Myself Carol Clark.

ASSISTANT: Do you prefer connecting or direct flight in your journey?

USER: I need connecting flight.

ASSISTANT: Please let me know your other requirements.

USER: No.

ASSISTANT: Sorry, there are no flights are available matching your details.

USER: Thanks for your information.

ASSISTANT: Thank you for choosing us.