You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you help me to book a business class flight ticket?

ASSISTANT: Sure, please share your journey dates?

USER: My travel dates are May 16 and May 18.

ASSISTANT: May I know your airport codes?

USER: My airport codes are MCO and DEN.

ASSISTANT: Do you have any specifications?

USER: I would like to depart in the evening time in connecting flight.

ASSISTANT: May I know your good name?

USER: I am Richard Jackson.

ASSISTANT: Sorry, no flights found on your given details.

USER: No problem, thank you fro the information.

ASSISTANT: Thank you for choosing us.