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

ASSISTANT: Hello, how can I aid you?

USER: I plan to visit Denver Botanic Garden, can you please help me in booking with the price range 500?

ASSISTANT: Sure, I will help you. Can I know your travelling dates?

USER: My travelling dates on 10/31 to 11/02. I need single connection in between journey.

ASSISTANT: Ok, please share your airport codes?

USER: My airport codes are JFK to DEN.

ASSISTANT: Please wait for a while, I will revert to you.

USER: Sure.

ASSISTANT: Thanks for waiting. Sorry to inform you that, there were no flights matching with your preferences.

USER: Ok, no issue. Thank you for your information.

ASSISTANT: Thank you for approaching us.