You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Can you help me to book a flight ticket from ATL to HOU?

ASSISTANT: May I know your trip dates?

USER: My travel dates are June 18 and June 20.

ASSISTANT: Do you prefer any connections?

USER: I prefer connecting flight flight for this trip.

ASSISTANT: Do you prefer any requirements?

USER: No.

ASSISTANT: There is a connected flight in Frontier airlines with the fare 200.

USER: Please proceed to book my flight ticket in this airlines.

ASSISTANT: May I know your name?

USER: I am Cynthia King.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you.