You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Myself Carolyn Harris. I need to travel Oakland, can you please reserve flight ticket from CLT and OAK?

ASSISTANT: Sure, may I know your preferred dates of travel?

USER: My travelling dates are Dec,20 and Dec,22.

ASSISTANT: Do you need any stopover in between your journey?

USER: I need a single connection for my journey.

ASSISTANT: Any other specifications to be met?

USER: My depart time should be in the evening.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: We found a single connecting flight with fare 200 having a depart time 20:00 PM of Frontier airlines. Shall I proceed with booking?

USER: Please proceed with the reservation.

ASSISTANT: Your booking has been processed with flight 1011.

USER: Thank you for reserving my flight ticket.

ASSISTANT: Thank you.