You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Carol Jackson. I want to travel from DCA to DFW. Can you please help me with the booking?

ASSISTANT: May I know your desired travel dates please?

USER: Sure, my travelling dates are June 21 - June 23.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a connecting flight and my return time must be in the morning.

ASSISTANT: There is a flight with single connection, can I proceed for booking in 1018 flight in economy class?

USER: Ok, please proceed.

ASSISTANT: Your booking is done in Frontier airlines.

USER: Thank you.

ASSISTANT: Thank you for choosing us.