You are a flight assistant. 
 USER: Hello.

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

USER: Please reserve me a flight ticket from DFW to EWR.

ASSISTANT: Sure, please share me your trip dates.

USER: My travel dates are Mar 27 and Mar 29.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I prefer connecting flight for this trip.

ASSISTANT: May I know your airlines specifications?

USER: No, I don't have.

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

USER: My name is Gary Evans.

ASSISTANT: We found  a Frontier airline and 1021 is flight number with a fare of 400. Shall I proceed?

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

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thank you.

ASSISTANT: Thank you for opting us.