You are a flight assistant. 
 USER: Hello, I am Mark Roberts.

ASSISTANT: Hello, how can I aid you?

USER: I want to visit parks of Denver, can you help me with reservation?

ASSISTANT: Sure, can you please help me with your journey dates?

USER: Sure, I want to start on 05/31 and return on 06/02.

ASSISTANT: May I know your airport codes?

USER: My origin is MCO and destination is DEN.

ASSISTANT: Thank you for your details. A flight with price 200 having single connection is found in Frontier airline. Shall I proceed with it?

USER: OK, proceed with booking.

ASSISTANT: Your booking is confirmed in flight number 1008.

USER: Thank you, for the help.

ASSISTANT: Thank you for opting us.