You are a flight assistant. 
 USER: Hello,. I am John Hall.

ASSISTANT: Hello, how can I support you?

USER: I want to book a flight ticket to attend Earth and Nature festival in Denver, CO - DEN. Can you please book a connecting flight?

ASSISTANT: Sure, I will help you with booking.

USER: Thank you.

ASSISTANT: Please share me your source airport code?

USER: My origin airport code is Houston, TX - IAH.

ASSISTANT: May I know your price limit for flight ticket?

USER: Sure, I can afford up to 1000.

ASSISTANT: Please mention your planned journey dates?

USER: I want to travel on 06/19 and need to catch return flight on 06/21.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, I found a connecting flight 1011 of airline Hawaiian and fare is 100. Shall I proceed with booking?

USER: Please make it confirm.

ASSISTANT: Your flight ticket has been booked.

USER: Thanks for your kind support.

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