You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help?

USER: I am Brian Hernandez. Can you help me to book a flight ticket on 07/14 and return date is 07/16?

ASSISTANT: Sure, can you please tell your travelling airport codes?

USER: Ok, my origin airport code is EWR and destination airport code is DEN.

ASSISTANT: Frontier airline is available with 1 connection and ticket price is just 200. Shall I proceed with it?

USER: Ok, please book.

ASSISTANT: Your reservation is confirmed with flight 1018.

USER: Thank you for booking.

ASSISTANT: Thank you and have a nice day.