You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I best serve you today?

USER: I want to attend a Seminar in Charlotte. Can you please help me for booking the flight ticket?

ASSISTANT: Sure, please share me your trip dates.

USER: My travelling dates are Jan 06 and Jan 08.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: My name is Samantha Harris.

ASSISTANT:  Do you need direct flight or connecting flight?

USER: I need single connecting flight.

ASSISTANT: May I know your arrival and depart timings?

USER: I want to return on afternoon.

ASSISTANT: Please share me your source airport code.

USER: My airport codes are LAS and CLT.

ASSISTANT:  Sorry to say that, there are no flights available on the routes of your journey.

USER: Anyway, thanks for the information.

ASSISTANT: Thank you for opting us.