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

ASSISTANT: Hello, how can I help you?

USER: I would like to visit Down Town Aquarium in Denver, CO - DEN. Can you please book me a connecting flight?

ASSISTANT: Sure, please provide your journey dates?

USER: I will fly on 01/21 and return on 01/23.

ASSISTANT: May I know your origin airport code?

USER: My source airport code is Chicago, IL - ORD.

ASSISTANT: We found a flight inSpirit airlines, flight number is 1020 with one connection and price is 100.

USER: Ok, confirm my flight booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thanks for helping me.

ASSISTANT: Thank you for choosing us.