You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you today?

USER: I need to travel Denver, can you please reserve flight ticket?

ASSISTANT: Sure, please share me your source airport code?

USER: My Source and destination airport codes are EWR and DEN.

ASSISTANT: Please mention when you planned to travel?

USER: My travelling dates are Dec,13 and Dec,15.

ASSISTANT: Do you want a connecting flight?

USER: I prefer one connecting flight.

ASSISTANT: Is there any other requirement?

USER: No.

ASSISTANT: May I know your good name?

USER: Myself Carol Lee.

ASSISTANT: I found a connecting flight 1009 of airline Frontier, fare is 100 and class is economy. Shall I proceed with booking?

USER: Please proceed with the reservation.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you for reserving my flight ticket.

ASSISTANT: Thank you for visiting us, have a nice journey.