You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Brandon Martinez. I want to book a ticket from DCA to MCO, can you please help me?

ASSISTANT: Sure, please provide your itinerary dates.

USER: My travelling dates are on Jan 23 and 25.

ASSISTANT: Do you have any specifications?

USER: I need to depart and return at afternoon.

ASSISTANT: May I know your connection limit?

USER: I need single connection.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no flights are available from MCO in the afternoon.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for choosing us.