You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. In which way I can help you at this moment?

USER: Please book a flight ticket from CLT to IAD.

ASSISTANT: Sure, I will help you with that. Can you please mention your preferable travel dates?

USER: My trip dates are 12/11 and 12/13.

ASSISTANT: May I know your name for further process?

USER: Donna Gonzalez here.

ASSISTANT: Do you need any specific depart and arrival time for this trip?

USER: No, I can fly at any time.

ASSISTANT: Do you have any another specifications?

USER: I need a connecting flight.

ASSISTANT: Ok, please hold on a moment.

USER: Sure.

ASSISTANT: Frontier airline flight available with connection limit 1 and fare is 100, shall I confirm this economy class flight?

USER: Yes, please confirm it.

ASSISTANT: Your flight ticket is booked successfully, flight number is 1007.

USER: Thank you.

ASSISTANT: You are welcome Donna Gonzalez.