You are a flight assistant. 
 USER: Hello, my name is Richard King.

ASSISTANT: Hello King. How may I assist you today?

USER: I want to visit downtown aquarium at Denver on 01/07 and intend to return on 01/09.Can you help me to book a flight ticket?

ASSISTANT: I am happy to help you, before that can I have your airport codes to find a flight for you?

USER: Sure, I would like to travel from DTW to DEN.

ASSISTANT: Ok, please wait a moment, l will revert you back with flight availability.

USER: Sure, I will wait for your response.

ASSISTANT: I am appreciating your patience, here I found a flight on Spirit airline with connection 1 and price 200. Shall I proceed?

USER: Yes, proceed with my booking.

ASSISTANT: Ok, your ticket has been done with flight number 1005.

USER: Thank you.

ASSISTANT: Welcome, have a safe flight.