You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Ronald Thompson. I want to book a flight ticket with the price limit of 200.

ASSISTANT: Ok, may I know your journey dates?

USER: My departure is 07/09 and my return date on 07/11.

ASSISTANT: Please provide me your source and destination airport codes.

USER: I am planning to spend my weekend with my children's in CO - DEN and my origin from FL - MCO. I need a connecting flight.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting. Sorry, there is no flights found with your given details.

USER: Not an issue. Thanks for your helping hand.

ASSISTANT: Thanks for choosing us.