You are a flight assistant. 
 USER: Hello, I am Paul Anderson.

ASSISTANT: Hello,. How can I aid you today?

USER: I have a plan to visit Elitch Gardens at denver, please book a flight ticket under price 5000.

ASSISTANT: Sure, we are euphoric to assist you.

USER: Thank you.

ASSISTANT: May I know your itinerary dates?

USER: My travelling dates are from 11/12 to 11/14.

ASSISTANT: Please, provide me your airport codes for further booking.

USER: I want to fly from HOU to DEN.

ASSISTANT: Ok,. Give me a minute, I will check the availability of flights and revert to you.

USER: Ok.

ASSISTANT: Thanks for your time. Sorry, to notify you that there are no flights found to your destination.

USER: No issues, thank you for the information.

ASSISTANT: Thank you for approaching us.