You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I have to meet my business partner in San Francisco, so please help me to reserve a plane ticket from Denver.

ASSISTANT: Sure, may I know your travel dates please?

USER: My travel dates are June 6th and June 8th.

ASSISTANT: Please share your connection limit.

USER: I would like to prefer a single connecting flight.

ASSISTANT: Let me know your good name please.

USER: My name is Justin Wright.

ASSISTANT: Please share your specific airport codes.

USER: The origin and destination airport codes are DEN and SFO.

ASSISTANT: Is there any more specifications to be met?

USER: No, I didn't have any more specifications to met.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: It's ok, not an issue with that. I will reach some other agency to book my ticket. Anyways thank you for your time.

ASSISTANT: Thank you for availing us.

USER: You are welcome.