You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you now?

USER: I want to book a ticket from DCA to MCO to attend seminar, can you help me in booking?

ASSISTANT: Ok, may I know your planned dates for this journey?

USER: I am departing on May 27 and return on May 29.

ASSISTANT: Please share your connection limit.

USER: I prefer a connecting flight.

ASSISTANT: Do you have any other requirements?

USER: I do not have any other specifications.

ASSISTANT: Ok, may I know your good name?

USER: My name is Joseph Perez.

ASSISTANT: I am verry to say, but there are no flights available for your journey.

USER: That's ok, thank you for your information.

ASSISTANT: Have a nice day.