You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you today?

USER: Can you please book the ticket from ATL to DEN?

ASSISTANT: Sure, may I know your travel dates also?

USER: My preferable dates are 02/27 and 02/29.

ASSISTANT: Let me check with the available flight please.

USER: Please look for the flight which charges under 200.

ASSISTANT: May I know your name please?

USER: My name is Mary Baker.

ASSISTANT: Flight 1023 by AA airlines is available at price of 200, can I book it for you Mr.Baker?

USER: Ok, how many stops do this flight have?

ASSISTANT: Only single connection between ATL to DEN.

USER: Ok, please book it.

ASSISTANT: Your booking is confirmed with us, thanks for reaching us.

USER: Thank you for booking.