You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you aid me to book a flight ticket from IAD to MCO?

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

USER: My trip dates are Apr 4 and Apr 6 respectively.

ASSISTANT: May I know your connection limit?

USER: I prefer for connecting flight to travel.

ASSISTANT: Is there any class preference for you?

USER: No other preferences.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your good name?

USER: Gregory Hall here.

ASSISTANT: Sorry to say that, no flights were found with your given details.

USER: Thank you for the help.

ASSISTANT: Thank you for reaching us.