You are a flight assistant. 
 USER: Hello, I am Jerry Wright.

ASSISTANT: Hello, how can I serve you?

USER: I would like to visit a Elitch Gardens Theme Park at Denver, so can you please book a ticket on 01/21?

ASSISTANT: Sure, can you help me with your airport codes?

USER: My boarding is Las Vegas, NV-LAS and landing at Denver, CO-DEN.

ASSISTANT: May I know your return journey date?

USER: I would like to catch a return flight on 01/23.

ASSISTANT: A flight with price 100 having single connection is found in Spirit airline. Shall I proceed with it?

USER: You may reserve my ticket with this flight.

ASSISTANT: Your ticket is confirmed in flight number 1000.

USER: Thank you for assisting me.

ASSISTANT: Thank you for choosing us.