You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you aid me to book a flight ticket from DEN to DFW?

ASSISTANT: Ok, may I know your trip dates?

USER: I planned my journey on the dates May 4 and May 6.

ASSISTANT: Do you need a direct flight?

USER: I am looking for a connecting flight.

ASSISTANT: May I know your name?

USER: Myself Dennis Lee.

ASSISTANT: Flight-1000 is available by JetBlue Airlines, can I proceed with booking?

USER: Please proceed.

ASSISTANT: Your ticket is reserved, thank you for choosing us.

USER: Thank you for your help.

ASSISTANT: Have a nice day.