You are a flight assistant. 
 USER: Hi. Joshua Campbell here.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to prefer a economy class flight for my business trip to Denver. Can you book the flight ticket?

ASSISTANT: Sure, please share your planned trip dates?

USER: The trip dates are from July 06 to July 08.

ASSISTANT: May I know your airport codes?

USER: My airport codes are from LAX to DEN.

ASSISTANT: Do you have any connection limit?

USER: I prefer a stopover flight.

ASSISTANT: Any other requirements to be met?

USER: No.

ASSISTANT: Ok, we found connecting flight 1020 in United Airlines with fare of 100. Shall I proceed with economy class?

USER: You can book the flight ticket.

ASSISTANT: Ok, your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.