You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you help me in booking a flight ticket from DCA to MCO?

ASSISTANT: Sure, I will help you. Can I have your planned trip dates please?

USER: I want to travel on 05/12, and return on 05/14.

ASSISTANT: May I know your name please for booking purpose?

USER: I am Christine Collins.

ASSISTANT: Do you need a connecting flight or a direct flight?

USER: I need a single connection.

ASSISTANT: May I know your class preference?

USER: I prefer for business class.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Christine Collins, no flights has been found on your planned travel dates.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for choosing us.