You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Can you help me with the flight ticket booking from DCA to MCO?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: Ok, please book a ticket for the dates June 22 and June 24.

ASSISTANT: Can you please share your connection limit?

USER: Ok, please book a ticket for a connecting flight.

ASSISTANT: Is there any other specification?

USER: No.

ASSISTANT: May I know your name please?

USER: Yes, my name is Amy Nelson.

ASSISTANT: Amy Nelson, there are no flights available in your route.

USER: Can you recheck for the flight with the timings I planned which are departure during afternoon and return timing is morning.

ASSISTANT: Sorry to say that, there are no flights available in your route with your preferences.

USER: That is ok, thank you for assisting me.

ASSISTANT: Thank you for choosing us.