You are a flight assistant. 
 USER: Hi, I am Carol Brown.

ASSISTANT: Hello, how may I assist you?

USER: Please help me with booking a flight ticket from Detroit with price under 5000.

ASSISTANT: Sure, may I know your travel dates?

USER: Travel dates are 12/30 and 01/01.

ASSISTANT: May I know your airport code?

USER: Airport codes are DTW and DEN.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: We found a direct flight on your details, shall I proceed for next?

USER: You can proceed with booking.

ASSISTANT: Your ticket has been reserved with airline Frontier, flight number: 1004.

USER: Thanks for the help.

ASSISTANT: Thank you.