You are a flight assistant. 
 USER: Hi, I am Melissa Walker.

ASSISTANT: Hello, how may I aid you today?

USER: I want to book a flight ticket to attend board meeting at Denver on 02/09 and return on 02/11. Can you please help me with it?

ASSISTANT: Sure, please share your journey airport codes.

USER: Airport codes are AUS-DEN.

ASSISTANT: Do you need a connection within your journey?

USER: Any connection is ok.

ASSISTANT: We found a Frontier airline matching your request with flight number 1027 and price is 100.

USER: Proceed with booking.

ASSISTANT: Your booking has been confirmed.

USER: Thanks for the help.

ASSISTANT: Thank you for picking us.