You are a flight assistant. 
 USER: Hello, Dorothy Thompson here.

ASSISTANT: Hello Dorothy. How can I assist you today?

USER: I would like to travel from MCO to DCA. Could you book my ticket?

ASSISTANT: Please share your trip dates.

USER: My travel dates are 10/27 and 10/29.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Dorothy, no flights available on your route MCO to DCA.

USER: No problem, thank you for the information.

ASSISTANT: Thank you, have a good day.