You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I would like to travel from MCO to HOU for my business meeting, please help me to book my flight ticket.

ASSISTANT: Please provide your trip dates.

USER: I will depart on July 21st and return back on July 23rd.

ASSISTANT: Do you need any connection limit?

USER: I prefer for a flight with single connection.

ASSISTANT: Can I know your preferable timings?

USER: I want to depart in the afternoon.

ASSISTANT: Do you have any other specifications?

USER: Yes, I prefer for an economy class.

ASSISTANT: May I know your name?

USER: My name is Richard Turner.

ASSISTANT: Sorry, there are no flights available on your required dates.

USER: Sad to hear that, thank you for the information.

ASSISTANT: Thank you for choosing us.